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Don’t Miss the California Cannabis Investment Forum THIS THURSDAY


Please join us this Thursday, September 28th for the California Cannabis Investment Forum in Downtown San Francisco!

Our San Francisco office is hosting this event with fiscal sponsorship from Templar Capital Management and GBDS and associate sponsorship from the NCIA. This Forum will bring together top investors and leading companies in California’s cannabis industry and provide you with the information you need for investing in California’s cannabis space.

Hilary Bricken, who heads up our Los Angeles office. will begin the event with a short talk on the many recent changes to California’s medical and adult use cannabis laws. Carlton Willey, who heads up our firm’s finance group out of San Francisco, will then moderate a panel comprised of early and late stage investors and debt and equity financers with experience in California’s cannabis industry. The following panelists will discuss cannabis industry investing, deal structures, cannabis business concerns in the context of investing, investor red flags in the cannabis industry, and various other matters of increasing importance in the California cannabis investment world:

Allen Gold, Principal at Templar Capital Management

Alejandro Di Tolla, CEO of GBDS

Sherri Haskell, CEO of CannaAngels

Tom DiGiovanni, CFO of Canndescent

Emily Paxhia, Managing Director of Poseidon Asset Management

The California Cannabis Investment Forum will be at Covo Event Space in Downtown San Francisco. Doors will open at 5:45 pm and Hilary’s keynote will begin at 6:15. Hors-d’oeuvres and drinks will be served and a cocktail networking session will take place following the panel discussion.

We look forward to seeing you there, but do NOT delay in buying your tickets. We must cap attendance at 250 and we are very rapidly nearing that number already.

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Actress Gets Tricked into Smoking Marijuana While Filming on Movie Set


Actress Kirsten Dunst accidentally smoked a real joint while on set filming her new movie Woodshock.

The movie includes marijuana smoking scenes, and during one take a joint filled with marijuana made its way onto set and into Dunst’s hands without her knowledge that it was a real joint, reports Allure. Typically, on movie sets, she said, the actors don’t smoke actual marijuana, instead it’s “movie pot, whatever they roll…tobacco if you smoke cigarettes, they roll herby stuff — not herb, but you know — like fake whatever. Oregano.”

Dunst said, “After we were done with the scene, I went back to this little bedroom to rest and I started to feel like I was losing my mind. I went to the bathroom, I’m pacing. I told the director there was something wrong with me, I think I need to go to the hospital. There’s something seriously up, I feel like I’m losing my mind! [The director] goes back, he looks at everything that I smoked to make sure everything is okay, and came back and said, ‘You smoked a full blunt on one of the takes.’” And not only was it an entire blunt, Dunst added, it was a packed with Humboldt County marijuana which is notoriously potent.

It turns out the film crew that rolled the “movie joints” decided to include some real marijuana for fun.

Dunst said, “I was crying, laughing, eating a peanut butter sandwich. I couldn’t film anymore, they sent me home! I was a total mess! I’ve never been that stoned in my entire life!”

Photo: tom&lorenzo

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Daily High Club’s Best Box Yet! The Chill Bud II


It’s no secret that the Daily High Club is our hands down favorite monthly stoner subscription box. We even collaborated with them on their 2016 September box; The Chill Box. Filling the box with smoking essentials that every day tokers know and love, not nonsense or fillers that will inevitably end up in the garbage can. This box was such a hit among The Chill Bud fans, along with Daily High Club subscribers that it became one of their best selling boxes of all time! So, naturally we were thrilled to hear that our friends at DHC wanted our input for their 2017 September box. Enter The Chill Bud 2.


What’s the Daily High Club All About?

If you’re not already familiar with the Daily High Club, here’s a brief rundown of the amazing service they offer both subscribers as well as non-sub customers.

Choose between three different tier options: All-natural, Connoisseur and El Primo. The All-natural is the cheapest option coming in at $1 USD + $2 USD shipping, giving customers the essentials (papers, matches, hemp wick and filter tips). A great way to keep your kit loaded up every month without having to leave the comfort of your home.

The Connoisseur option is a collection of 7-9 products for $12 USD shipped for free to USA residents. Expect things like rolling papers, filter tips, lighters, doob tubes, pre-rolled cones etc…

The best value and most exciting option is the El Primo box, giving customers over $80 worth of smoking supplies for $30 or less (depending on your subscription plan). The El Primo DHC box always includes a new piece of glass for your collection as well as a myriad of smoking essentials to keep you topped up all month long. Buy an El Primo box for $30 USD with free shipping to US residents, or subscribe for additional savings ($27.50/month for 6-month plans and $26.50/month for 12-month plans). Far and away the best deal we’ve ever come across, especially considering the unique and high quality glass pieces they include in every box.

The Daily High Club also has an online store that gives customers the chance to purchase past favorites, from complete boxes to individual glass pieces and everything in between.

Past Daily High Club Glass Pieces

Here are a few examples of the amazing and unique glass pieces that the Daily High Club has released.


The Chill Bud II Presented by Daily High Club

Our friends at the Daily High Club are always a pleasure to work with, for the simple fact that they put the customer first and they know smoking accessories inside and out. You really get the sense that a smoker is putting these boxes together, not some number crunching business person that has never puffed in their life.

We worked closely with the DHC to ensure every item in The Chill Bud II box was a perfect fit. Offering customers a wide array of items they’ll use everyday, there’s something for everyone.

Piece by piece breakdown:

  • Chill Bud 14mm Glass Recycler
  • Chill Bud glass jar
  • DHC Donut glass mat
  • Boveda 2-way humidifier
  • Full size Clipper lighter
  • Chills 1 ¼ papers
  • Kush hemp wraps
  • Hempvine hemp wick
  • RAW filter tips
  • Cyclone pre-rolled cone
  • DHC sticker set

An unprecedented value for the $30 USD they’re charging (less if you’re a subscriber).

So… What are you waiting for? The Chill Bud 2 box is only available for a limited time, so go grab one for yourself or a friend and you can thank us later.

Get yours here:


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Three Surprising Numbers for Cannabis Businesses This Week


Three important numbers you should know about the cannabis industry this week.

$6 million

Southern University of Carenco, La. awarded newcomer medical cannabis company Advanced Biomedics a $6 million contract to grow, process and distribute medical cannabis. Advanced Biomedics plans to construct a 40 thousand square foot facility in Baker, La.

89.5 percent

Almost 90 percent of physicians-in-training said they do not feel prepared to prescribe medical marijuana according to a recent survey, and only nine percent of medical school curriculums document content on medical marijuana in the Association of American Medical Colleges database.

10,000 to 200,000 square feet

The trend in cannabis grow facilities is to go big, according to EnviroGrow CEO Dan Williams: “The trend in cannabis is large-scale facilities from 10,000 to 200,000 square feet as states are giving out a limited amount of cultivator licenses.”

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Double Comma Vapes eJuice Review


Final Score

If your after a smooth all day vape then Double Comma Vapes should be on your radar by now! They produce some of the nicest flavors we have tried for some time, without overpowering you so you can enjoy this vape for sometime. It’s common practise for vape juice manufacturers to stack flavoring so high that it tastes really good to start with, but after an hour or 2 you become sick of it, not with Double Comma Vapes though! This is one for the vaper who wants an e-liquid to use all day without switching!

CHEAP Double Comma Vapes Deals & Coupons!


$6.99 – Coupon “TRYTHREE” – 90ml for $6.99 Get This Deal!

Full In-Depth Review of Double Comma Vapes E-Liquid

It’s always exciting to get a chance to try an unfamiliar line of e-juices, as it can sometimes introduce us to surprising tastes that we might have otherwise missed. We recently had the opportunity to try out the Double Comma Vapes line and were both excited and skeptical from the outset. We were excited because new tastes are always an adventure. We were skeptical, due to the low prices that these juices sell for. After all, how could an inexpensive e-liquid hope to compare with premium-priced options? In this Double Comma Vapes eJuice review, we’ll try to get the answer to that question.

First, let’s get that price issue out of the way. A 30ml bottle of Double Comma Vapes juice sells for just under $14 a bottle, while you can get twice that amount of juice for a penny shy of $25. That’s an incredibly low price fit for any budget. The juice comes in a variety of nicotine strengths, ranging from 0mg to 6, and is manufactured with an 80/20 ratio of VG to PG. Many premium juices are double that cost, so it’s easy to see why some might assume that these e-liquids must be at the lower end of the quality spectrum.

Our tests demonstrated something else entirely, as we’ll explain throughout this review. There are many flavors in their product line, we’ll review them and compare them to the other vape liquids on the market.

Nitrous Oxide eJuice from Double Comma Vapes

Nitrous Oxide

Nitrous oxide reminds me of many of the energy drinks I consumed years ago. It has that lemony flavor that most energy drinks offer, as well as an iciness that we found more than refreshing. While it’s not a straight menthol-type flavor, it’s easy to imagine many menthol fans enjoying this juice product.


Double Clutch Crunch

Cereal-flavored juices have been popular for years now, and Double Clutch Crunch seems perfect to meet those cereal-loving vapers’ taste needs. This juice tastes like Cap’n Crunch, but it’s the peanut butter variety rather than the regular cereal offering. As a big fan of peanut butter, this one was perhaps my favorite of the sweet juices – so I can’t recommend it enough. Others in our group were pleased with its taste profile as well.

Hot Wheelz eJuice by Double Comma Vapes

Hot Wheelz

Another great peanut butter offering comes in the form of Hot Wheelz – only this time, it’s peanut butter and grape jelly. As a fan of both the cream and the jelly, I was really looking forward to trying this one, and Double Comma didn’t disappoint!  This is a fantastic rendition of the classic peanut butter and jelly sandwich, ideal to accompany your best vape mod!


Murcielago Macchiato

Coffee-lovers will be thrilled by this flavor offering – especially if they’re fans of iced coffee drinks. It’s reminiscent of the chilled coffee beverages you can get at specialty coffee shops, and offers that great coffee taste with a strong hint of frappuccino for good measure. It’s delicious – though probably won’t get you going in the morning like your regular cup of joe.

Countach Crumble eJuice by Double Comma Vapes

Countach Crumble

Countach Crumble is a sweet combination of peach and butter crumble cake. I’m not a big fan of peach flavored treats, but this seemed to be appreciated by others in our test group. The flavor is pure, sweet, and has a taste that stays with you long after you put down your vaping device. If your after a juice to help you vaping to quit smoking then this one may help!


Skyline Fuel

Are you a fan of grape drinks like Kool-Aid? If so, then Skyline Fuel may become your next all-day vape. This is a sweet grape variety that perfectly captures the essence of that classic drink, in the simplest way possible. While some e-juices try to subdue the grape flavor, offering just enough of a hint of grape to get your attention, Skyline Fuel blasts the grape into your mouth in a way that leaves no doubt about what you’re vaping!


Our Conclusion

The big question, though, is whether Double Comma’s line of flavors meets the high bar set by many premium manufacturers. In our estimation, there can be no doubt: it does! In fact, these products do more than just clear that bar. They leap over it in a single bound, shatter it in pieces, and roar out a challenge that the rest of the vaping world will be hard-pressed to ignore. There’s been a lot done in the industry to help to combat things like popcorn lung with the removal of Diacetyl etc and Double Comma Vapes stand by the quality of juices they provide.

Double Comma is a winner on so many fronts that it’s difficult to know where to begin. Price? Theirs are more competitive than most. Flavor? Pure and simple, and accurate to a fault! Packaging? Their product line offers consistent labeling that should help to secure their brand identity with ease. In short, this is a great line of juices, and we highly recommend them to sweet-loving vapers everywhere.

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Types of Rebuildable Tanks



Vaping can be daunting for a newcomer. With a mess of acronyms like RDA, RTA, RBA and RDTA to contend with, even grasping the basics about the types of rebuildable tanks can seem difficult. But like so many things with vaping, it really isn’t as complicated as it might seem.


The acronyms don’t really matter – what matters is what type of vaping experience you’re looking for and how much you’re willing to tinker and top up to get the results you’re looking for. So here’s a guide to the types of rebuildable tanks to help you get to grips with the options and find your perfect device, with definitions, explanations and pros and cons for each type.


The Very Basics: What is an RBA?


Rebuildable Atomizers Vaping


The best place to start a discussion like this is right at the beginning. The term “RBA” is a catch-all one that just means re-buildable atomizer. So all types of rebuildable vape tanks are also classed as RBAs.


The key feature of an RBA is that you make the coil and wick assembly yourself instead of buying it pre-made (as an “atomizer head”). The coil is made from any one of several materials (but usually Kanthal), and the wick is usually cotton.


Technically, rebuildable atomizers that don’t even have tanks are also RBAs. Anything you have to build your own coil for qualifies. But in practice, when most people say RBA they are referring to a rebuildable tank. This is a little confusing, but it’s just a relic of how the jargon has evolved along with the technology.


RBAs Explained: The Key Features


Building a coil for an RBA is really just completing an electrical circuit using a resistor you made yourself. When you press your “fire” button, it sends electricity through your coil and heats it up, and that’s what vapes your e-juice. So RBAs really just offer two or more points for you to connect your coil and complete the circuit.


Rebuldable Tank Atomizers Explained
The two outer posts are the negative connections and the center one is the positive connection. On this RBA, the positive post is “split” to offer two connection points.


These are usually on posts, but some do the same thing without posts (for example, the Wotofo Conqueror).


RBA Postless Deck


The deck is where all the action happens on any of the types of RBAs. This is where the posts are, where you make the coil and where your vape juice is vaporized. You insert a wick through the coil and position the wick so it can soak up e-juice from the deck and outside it.


The types of rebuildable tanks just use different approaches to getting e-juice to the deck and ultimately, your wick and coil. For example, one RBA might have the tank below the deck and another might have a deck inside the tank. Then, finally, all RBAs have some method of getting the vapor up into the mouthpiece.


Pros and Cons of Rebuildable Atomizers


This immediately shows some important downsides and the upsides of using RBAs overall, and we’ve added some others too. All of these points apply to all types of rebuildable tanks, and RDAs too.




  • It’s much cheaper than buying ready-made coils.
  • Better flavor.
  • Better vapor production.
  • You’re less likely to run out of coils – you can always vape.
  • Let’s you tailor your vaping experience to suit your tastes.




  • Not as simple as using pre-built coils.
  • It’s important to know what you’re doing – you’ll need some basic knowledge of how circuits work and learn how to stay safe.
  • Require a “mod” to use.


What are RDAs? The Non-Tank Rebuildables


RDAs Explained


RDAs are a type of RBA, but aren’t a type of rebuildable tank. It stands for rebuildable dripping atomizer, and in some ways, these are simpler than RBA tanks. RDAs only have a “deck” section, and no tank to feed liquid to the wicks. Instead, you manually “drip” liquid onto the wick before vaping. When the liquid in the wick starts to run out, you drip again to soak the wicks before continuing to vape.


RDAs Explained: How RDAs Work


RDAs Explained
This is a two-post deck, and each has two connection points for coils.


An RDA is the simplest type of RBA, because all you do is connect the coil and insert the wick to use it. They’re composed of a deck section and a “top cap,” which includes the mouthpiece and usually has a mechanism for adjusting the airflow to the coil.


The decks usually have a positive post and one or more negative posts – with two-post designs being common these days. The decks have a lip around the edge to form a “well” that holds a small amount of e-liquid.


So you make the coil, connect it to the posts, check everything works, insert your wick through it and it’s ready to use. Drip e-liquid on the coil and wick, put the top cap on and you’re ready to vape. We have a more detailed guide here (read How to Build an RDA Coil).


Should You Get an RDA?




  • Excellent performance. RDAs are a very direct way to vape. The liquid gets dripped directly onto the wick and coil and is vaporized before going right up to your lips. This means great flavor and vapor production – it’s often hard to beat.
  • Easy to change flavors. There’s no need to empty a tank to change flavor with an RDA. You can directly change the wick whenever you like or just vape until it dries out before changing it.
  • Generally affordable. RDAs are simple and so are usually quite cheap to buy, though they can get expensive too.
  • Great airflow options. RDAs are very well-suited to unique, complex and effective airflow designs. Some user under-coil airflow, some use side airflow and some use both.




  • More labor-intensive than tanks. Having to regularly drip means you have a lot more to do when you’re vaping with an RDA.
  • They’re prone to leaking. Unless you vape whatever is there before you put your RDA away, leaks are a common problem with RDAs in particular.


The Bottom Line on RDAs


A great way to vape for the long-term vaper, RDAs perform well and are affordable, especially in the long-term. The big downside is that you have to drip your e-juice regularly. This can be annoying regardless, but also rules out vaping while driving.


Check out some of our RDA reviews:


Tokugawa RDA by Tendou Vapor

Tsunami by GeekVape

Dog3 by Congrevape

Mutation XS by Indulgence



What Are RTAs?


Rebuildable Tank Atomizer Vaping


RTA stands for rebuildable tank atomizer, and it’s one of the main types of rebuildable tanks. An RTA is really a lot like an RDA, except with a tank surrounding the deck and supplying liquid to it. The deck is encased in a chamber, but there are small openings that allow juice to make it’s way up to the wick and coil. In essence, they work like normal vape tanks but you make your own coil for them.


RTAs Explained: How RTAs Work


In a normal vape tank, there is an atomizer head (containing the coil and wick) at the bottom of the deck in the center, and a central tube running up from it to the mouthpiece. RTAs work in the same way, except the atomizer head is really a small deck that you build your coils on.


RTA Tanks Explained


The deck itself is usually like a smaller version of an RDA deck. The main difference is that under-coil airflow is much more common because it’s the only place the air can really come from. The other major difference is that there are usually small channels that allow e-juice to be fed to the wicks and coils. These occupy the edges of the deck, usually positioned so your wicks naturally fall onto them.


So your coils connect to posts in the same way, and your wicks rest in the small juice channels. Instead of a top cap, the deck is enclosed in a small chamber, which feeds directly up to the center tube and your mouthpiece.


RTA Wick Setup


When the chamber is screwed on and the tank is filled with e-juice, it makes it’s way into the channels and soaks your wicks. With pressure from the inside of the tank and gravity working on your side, your wicks are quickly replenished with e-juice as you vape.


Of all the types of rebuildable tanks, RTAs work the most like ordinary sub ohm tanks.


Should You Get an RTA?




  • Great performance. They perform almost as well as RDAs, and sometimes they’re just as excellent.
  • Refilling is easier than dripping. With tanks of 5 ml or even more being common, you’ll have to fill up a lot less often with an RTA.
  • Still affordable. Using an RTA is cheap for the same reason using an RDA is – the materials you need to keep going are very affordable.
  • Safer to use while driving or doing other stuff. You can easily vape while driving or while working, without the need to drip.
  • Under-coil airflow. RTAs can’t have side airflow like RDAs, but the under-coil airflow systems are great for clouds and flavor.




  • Harder to set up. RTA decks are often short on space, so rebuilding and especially wicking can be a bit fiddly.
  • Performance isn’t always consistent. If you don’t wick your coils in the right way, you can get inconsistent performance with some RTAs.
  • Leaking is common. Under-coil airflow arrangements often lead to leaking through the airholes.


The Bottom Line on RTAs


RTAs are the purest of the types of rebuildable tanks, with performance and functionality just like ordinary sub ohm tanks. If you’re comfortable building coils on a slightly confined deck and don’t like dripping, RTAs are a great choice.


Check out our reviews of purpose-built RTAs:


Conqueror by Wotofo

Bachelor Nano by EHPro


And our reviews of sub ohm tanks with optional/included RBA heads:


Rafale by Uwell

Tornado Nano by iJoy

TFV4 by Smok

Subtank Mini by Kanger Mini

Simba by UD


What Are RDTAs?


Original Style RDTA Atomizer


RDTA stands for rebuildable dripping tank atomizer. As the name suggests, this is a bit of a hybrid of the RTA and the RDA, and they’re often called “auto-drippers.” However, this class isn’t really that clearly defined, and there are big overlaps with other types of rebuildable tanks, including RTAs and the Genesis-style devices we’ll cover shortly.


RDTAs Explained: How RDTAs Work


Originally, RDTAs worked a lot like RTAs but had a system that allowed you to manually send some e-juice to your wick and coils (like the 3D pictured above). For example, the drip tip would serve as a plunger, which you’d push down to pump some e-juice from the tank onto the deck. So in a way, they’d work a lot like an RDA but with the dripping replaced by a quasi-automated process.


The only problem for these types of rebuildable tanks is that they didn’t work consistently. The complicated designs with plungers and moving parts often went wrong. This is why you don’t see traditional-style RDTAs that often these days.


The reason you still see the term used is because the definition of RDTA these days has been muddied quite a bit. In many cases, they’re just like updated versions of Genesis-style atomizers.


RDTA - Auto Dripper


These are very similar to RTAs, except the deck is above the tank and juice is drawn upwards onto it. In practice, most RDTAs these days have holes drilled through the deck and you tilt the device to “auto-drip” some more juice.


Should You Get an RDTA?




  • They (usually) perform well. The original designs might be a bit hit-and-miss, but on the whole RDTAs perform really well, especially the modern style.
  • Easier to build than RTAs. RDTAs generally have a building deck more like an RDA, which makes the process much more forgiving.
  • Easier to top up than RDAs. RDTAs offer dripping-like operation without the need to remove a top cap and keep a bottle of juice with you at all times.




  • True RDTAs are hard to find. The original-style RDTAs didn’t always work well and are consequently quite hard to find.
  • Gravity works against you. Modern-style RDTAs have tanks below the deck, which means gravity works against you when it comes to wicking.
  • A lot can go wrong on older designs. More complicated systems open the door to more problems in use.


The Bottom Line on RDTAs


True RDTAs aren’t often found these days for a reason: they didn’t work as well as vapers had hoped. Newer designs are still great, but are more like Genesis-style RBAs than original RDTAs.


Check out these reviews of modern-style RDTAs:


Quad Flex Survival Kit by Aspire

Avocado 24 by GeekVape


What are Genesis-Style RBAs?


Genesis Style Atomizer Vaping


The main types of rebuildable tanks all have a lot of overlaps in terms of design and function. The biggest overlap, though, is between RDTAs and Genesis-style devices. This is mainly because manufacturers have started calling modern Genesis-style devices RDTAs.


A Genesis-style device (technically it should be Genisis – but the community has long since changed that) is an RTA with the deck above the tank, and holes in the deck for the wick. These were created in 2011 by an E-Cigarette Forum user, and quickly took off among early cloud-chasing vapers. One of the defining characteristics of this type of rebuildable tank is that most were designed to be used with stainless steel mesh as a wick.


Genesis-Style RBAs Explained: How Genesis-Style RBAs Work


Genesis Style Atomizers Explained


Old-style Genesis RBAs all had a very similar design. The upper deck contained one center post, which had adjustable thumb-screws extending up its length so you could trap your coil-end easily, and one contact point on the deck. There were also several holes in the deck itself, which were either used for filling or for inserting your wick. Some also had negative posts, but contact points on the deck were more common.


Because of the design, vapers build vertical coils for classic Genesis-style RBAs. They’d be wrapped directly around a tube of stainless steel mesh, which was inserted vertically downwards into the tank. One common issue with this was short circuits, which could easily form with a metallic wick. Ingenious vapers solved this issue in various ways, but ultimately this was why RDAs and other types of rebuildable tanks quickly became more popular.


Modern Genesis-style RBAs share a lot of characteristics with traditional types, but have a much more user-friendly design. Devices like the Geekvape Avocado are most usefully described as an RDA deck with a tank section underneath. Most use a two-post design, with multiple holes in each post for multi-coil builds.


Modern Genesis Atomizers Vaping


Unlike traditional types, the holes in the deck on modern designs are set up so they work with horizontal coils, and can be effectively used with cotton wicks. You can either setup so the wicks just touch the holes in the deck, or so they hang down into the tank and come in direct contact with the e-juice.


Should You Get a Genesis-Style RBA?




  • Easy rebuilding. The upper deck layout makes building on Genesis-style devices about as easy as on RDAs, especially for modern designs.
  • Excellent performance on modern styles. Many modern Genesis-style devices perform just as well as RDAs. However, older types were often inconsistent.
  • Easier to wick than RTAs. Getting the wick setup is much easier on Genesis-style devices, and you can get consistent performance with the wicks on the deck or hanging down into the tank.
  • Most can be used as RDAs too. If you don’t want to fill the tank, you don’t have to – Genesis-style devices can serve as RDAs too. This is especially true of devices like the Aspire Quad Flex.




  • Old-style designs have a lot of problems. The thumb-screws on classic Genesis-style RBAs were annoying, but the stainless steel mesh is the most annoying part – shorts and hot-spots are irritatingly common.
  • Wicking has to fight gravity. Getting juice to your coils means fighting gravity, so you can get dry hits if you don’t make absolutely sure you’ve soaked your wicks.


The Bottom Line on Genesis-Style RBAs


Genesis-style RBAs didn’t used to be all that great, but the newer style devices are some of the best types of rebuildable tanks on the market. The performance is right up there with RDAs, but they’re much easier to use.


What Are Kayfun-Style RTAs?


Kayfun Style RTA


The Kayfun was an absolute game-changer when it first soared to popularity, and it’s easy to see why. Most types of rebuildable tanks owe their history in part to the Kayfun – or to be more precise, the Golden Greek designs that inspired it – and so it’s not surprising that the Kayfun is very similar to most modern RTAs. When the Kayfun was released, it was most vapers’ first taste of the convenience and great performance offered by rebuildable tanks.


Like RTAs, Kayfun-style tanks have a deck at the bottom of the tank, which is set up perfectly for single-coil builds. This is enclosed by a chamber just like it is on most RTAs, and there are two channels running up the side for your e-juice to get to your coil. This is all surrounded by a tank in the same way as with most RTAs.


Kayfun-Style RTAs Explained: How Do They Work?


Kayfun-style RTAs work just like ordinary RTAs: you connect your coil to the two posts, position it over the big, under-coil airflow and insert your wick. Then you soak the wick and coil manually, screw on the chamber and the tank, then fill up and vape.


Really, Kayfuns are so similar to RTAs that they can’t really be considered one of the types of rebuildable tanks on their own. They’re only included here because of their significance to the evolution of RBAs.


Should You Get a Kayfun-Style RTA?




  • Great flavor. The Kayfun may be lacking when it comes to vapor production, but the flavor from the tank is excellent.
  • Easy to build. The build deck on Kayfun-style RTAs is spacious and well-designed. Modern devices often do better on this front, but it’s still great.
  • Good wicking. The wick is pretty easy to set up on the Kayfun – it still takes some getting used to but once you get the hang of it you won’t have issues.
  • Great for mouth-to-lung vapers. Mouth-to-lung vaping isn’t supported by many devices these days, but the Kayfun is definitely one of them.




  • Outdated. The Kayfun was great for it’s time, but for cloud-chasers in particular there are much better devices on the market.
  • No support for multi-coil builds. Another sign of the time it was made is that the Kayfun is really only set up for single-coil builds.
  • Airflow could be better. The reason the Kayfun isn’t the best for cloud-chasing largely comes down to the airflow, which is more restricted than on modern tanks.
  • Hard to find. Original and older-model Kayfuns are hard to find these days, but you can pick up the newer Kayfun 5.


The Bottom Line on Kayfun-Style RTAs


Kayfun-style RTAs had their moment to shine, and although they’ve fallen out of favor compared to newer models, they do still have a lot going for them. If you’re a mouth-to-lung vaper who likes flavor-chasing and a hint of vape-nostalgia, you should pick one up!


Conclusion: The Overlapping Types of Rebuildable Tanks


The overall lesson from this post is that the types of rebuildable tanks all share some common features, and they all work in a very similar way. Different types have different advantages and disadvantages, but on the whole, the headline benefit for any type of RBA is much better performance at a much lower price. If you’re happy building coils and you want the best performance, they really are the best way to vape.


Also Read:


Best Atomizers and Clearomizers

Best RDAs and RTAs


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Do Cannabis Patents Create Monopolies?


Our previous post in this series discussed the legal sources for cannabis patent rights. This post and later posts will address some questions about what patents could mean for the cannabis industry.

Today’s question is: Do cannabis patents create monopolies?

Today’s short answer is: Yes and No, but probably less than you might think.

A patent is a government-created monopoly, giving the patent holder an exclusive right to make, use and sell the patented invention. A patentee doesn’t have to let anyone else use her patent (there is no mandatory licensing in the United States), or even use the patent herself. Once the patent expires, it belongs to the public forever. Though the law abhors a monopoly, patents are an exception. The theory is that granting inventors a few years of exclusivity encourages the creation of products beneficial to society.

A patent is not an unlimited monopoly, however. To start, a patent is only good for a limited time, usually about 20 years from the patent filing date. Since it can take three or more years to get a patent granted, that often means a patent lasts 17 years or less in the real world. Patents cannot be renewed; once the patent expires, anyone can practice it at no cost.  Compared with trademarks, which could have indefinite terms, or copyrights, some of which can last as long as a century, the patent term is short.

Also, only inventions that are new and not obvious can be patented. If something has been publicly used or on sale for at least a year, it’s probably unpatentable by anyone. The legal meaning of “obvious” is different and more complicated than the dictionary definition. For our purposes, if a claimed invention could be readily made by a skilled person who was familiar with the prior art, it is obvious. These two requirements of novelty and nonobviousness are intended to ensure that the patent system narrowly rewards creators, not merely collectors or aggregators of products to which the public already has access.

Perhaps most importantly, a patent’s coverage is often much narrower than it appears. You can consider a patent to be like a real estate deed. The deed for your house may refer to the property at “1st and Main,” but that doesn’t mean you own everything at that address. Your actual property lines are set out in the deed’s legal description, e.g., by detailed surveying designations. Similarly, the scope of a patent is limited by the claim or claims, which are found in the last part of the patent following the words “I claim” or “What is claimed.” Here is a hypothetical cannabis utility patent claim, based on an issued patent:

What is claimed is:

1) A cannabis plant that produces a flower comprising:

[a] a terpene profile where myrcene is not the dominant terpene;
{b] a terpene profile defined as terpinolene, alpha phelladrene, and myrcene;
[c] a terpene oil content greater than 1.5%; and
[d] a CDB content of less than 3%.

Properly interpreting a patent claim is a notoriously squirrely activity. Even if you understand the technical features of the claim, there is an entire body of often-conflicting law on claim interpretation. But one principle is paramount in determining the scope of a claim: the patent covers only inventions that have each characteristic, known in patent law as an “element,” set out in the claim. If a plant had elements [a], [c] and [d], but did not have terpinolene in its terpene profile as required by element [d], it would not infringe that patent.

Our next post will consider more issues about patents and their effects in the cannabis industry.

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Survey: Majority of CBD Users Eventually Able to Stop Using Prescription Drugs


In the largest survey regarding cannabidiol (CBD), it was found that women are more likely to use CBD than men. Those using CBD were also able to cutback or stop taking their prescribed medications. The survey was conducted by Brightfield Group. The results were compiled from 2,400 respondents.

The survey concluded that 55 percent of those using CBD are women, according to Forbes. Men seem to prefer THC products. According to Dr. Perry Solomon, some of the most common reasons for using CBD include joint pain, anxiety, insomnia and depression.

Forty-two percent of the survey respondents indicate that they stopped using medications such as Tylenol, Vicodin and other prescribed medications. Eighty percent said that CBD products have been “very or extremely effective.” Only 3 percent said that CBD is either non-effective or only slightly effective.

More than 850 CBD brands are currently available on the U.S. market. There are also at least 150 hemp-based CBD derived products available. In the survey, 80 percent said they didn’t know which CBD (hemp- or marijuana-derived) they were using.

The DEA has determined that all CBD products are illegal because CBD is an extract for the cannabis plant, yet CBD products are available almost everywhere. Online sources, such as Amazon, also have CBD products available.

Dr. Solomon said, “This confusion is actually helping the producers of these products as consumers are turning to reliable and trusted brands.”

Some of the top producers of marijuana-derived CBD products include:

  • Care by Design
  • Bloom Farms
  • Kiva Confections

The biggest complaint among those surveyed is that marijuana-derived CBD products are more expensive.

In regards to hemp-derived CBD products, industry leaders include:

  • Charlotte’s Web (produced by the Stanley Brothers)
  • Plus CBD Oil
  • Mary’s Nutritionals

The biggest complaint regarding hemp-derived CBD is that some say it isn’t as effective as marijuana-derived CBD. Of those surveyed, 90-percent said they’d only make repeat purchases of marijuana-derived CBD.

The preferred method of delivery among all surveyed is vaping. In second place, is flower. Coming in third is edibles.

The average dollar amount spent per month on CBD products ranges between $20 and $80.

Vaping CBD delivers it faster and typically provides quicker relief. Edibles take longer due to digestion. For insomnia sufferers, according to Dr. Solomon, vaping will help the falling asleep process but may not be effective for staying asleep. In this case, edibles are the ideal option.

Dr. Solomon also said, “This landmark survey, in terms of its size and depth, shows the tremendous value that these products have for patients. Hopefully, access for products such as these will help patients all across the country who cannot obtain medication that contains THC.”

Photo: Pax Labs

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Jam Monster E-Juice Review



It seems like there’s an e-juice company for every niche type of flavor these days. From tobacco connoisseurs like Black Note through to companies specializing in desserts and sweets, there is no shortage of small-scale, boutique outlets catering to the whims of vapers with specific tastes. Jam Monster is firmly one of these such brands, offering three e-liquids all inspired by jam and toast combinations, with three different jams – Strawberry, Apple and Blueberry – completing their line-up. The bottles are huge, the flavors sound awesome and the design has a quirky appeal, but do the e-juices live up to expectations? We’ve tried the line-up for our Jam Monster e-juice review to find out.


Packaging and Design


Jam Monster Review - Bottles


Jam Monster does an excellent job with both packaging and design. The bottles are contained in boxes, which have the same design as the bottles themselves. The main colors are based on the flavor of the jam – red for strawberry, blue for blueberry and green for apple – all of which look like they’re dripping down the bottle, revealing a jam-jar like checkered pattern at the bottom.


There is also a little evil-eyed silhouette of a jam monster at the bottom, menacingly holding up a spoon of jam. Overall the look is great – it’s quirky but there is definite character, and the result is a visually-appealing set of bottles.


There’s also all the information you could need printed on the bottles’ labels and the outer boxes. They have “Jam Monster” and the name of the flavor written across the front, as well as the nicotine strength, the PG/VG ratio and the usual set of warnings. Every bottle has a “born on” date and a batch number, which is a definite confidence-booster when it comes to quality.


Jam Monster E-Liquid Packaging


Jam Monster has taken a pretty smart step and paired up with a couple of other companies – Wick n’ Vape (the company responsible for Cotton Bacon) and Chubby Gorilla. The 100 ml bottles are made by Chubby Gorilla, and are fat, squat, squeezable plastic bottles with dripper spouts. They’re also child-proof, so you have to push down on the cap as you unscrew it. As a cool little extra, you get a small pack of Cotton Bacon “Bits” inside every box alongside your bottle.


Overall, the packaging and design from Jam Monster is hard to fault – some vapers might prefer glass bottles or smaller containers but on the whole they’re great.


Mixing Options


Jam Monster PG/VG Ratio


The Jam Monster e-liquids come in a fixed PG/VG ratio of 25/75, with three-quarters of the finished product being VG. This PG/VG ratio firmly places Jam Monster as a choice for longer-term vapers, although anybody with a sub ohm tank or other modern atomizer should be able to vape the juices without issue. In general, though, the throat hit is fairly mild with Jam Monster e-juices, but the vapor production is substantial, making them a great choice for cloud-chasing vapers.


Owing to the long-term vaper focus of Jam Monster and the broader move towards lower-nicotine e-liquids in the vaping industry, Jam Monster’s e-juices only come in 0, 3 or 6 mg/ml of nicotine. A 12 mg/ml option in particular would have been good for newer vapers just switching from smoking, but realistically these e-juices aren’t really intended for fresh switchers. Plus, if you have a tank or atomizer efficient enough to use with 75% VG e-juice, 6 mg/ml e-juice will probably be satisfying for you anyway.


While there could have been more options here from Jam Monster, overall the mixing options available get the job done.


Jam Monster E-Liquid Review The Flavors


Jam Monster Review - Flavor Reviews

Strawberry – Rating 5/5


Accuracy: All of the flavors from Jam Monster are toast, butter and a type of jam, with the name of the flavor just telling you the flavor of the jam included. So for the Strawberry, the strawberry jam flavor takes center-stage, and it’s beautifully captured on the whole.


The flavor of the fruit comes through, but there’s a realistic, jam-like sweetness to it that makes it come across as more of a candy or dessert flavor than a fruity option. The toast is especially noticeable at the start of your draw, but adds depth throughout, although it isn’t as well-captured as it is in Craft Vapery’s “It’s Toast!”. As for the butter, it probably adds some richness but you don’t really taste it specifically in this flavor.


Overall: Strawberry is a really hard e-juice to criticize. The fruit is well-captured and subtly-supported by the bready elements from the toast. The result is an e-juice that’s sweet and tasty but comfortingly well-rounded, making it a solid choice for an all-day vape. This is the winner from the whole line-up for me – even 100 ml of it just doesn’t seem like enough.


Apple – Rating 4.5/5


Accuracy: The Apple jam option from Jam Monster picks up where Strawberry left off. There’s the same undercurrent of toast, and the velvety richness of the butter is definitely detectable in this one, but then it’s topped off by the apple flavor that gives the juice its name. The apple here isn’t particularly realistic – it’s more like a candied apple, with a heavy emphasis on the sweetness and a fairly muted bite.


Overall: This is another great juice from Jam Monster. The apple doesn’t hit as hard as the strawberry did as a flavor, but the soft nature of the taste and the candy-sweetness means it goes down just as easily. It also means the toast and butter components have more of an active role in this flavor, which adds another dimension to the juice and complements the fruit well. Overall, it’s a really enjoyable flavor, albeit not quite reaching the heights that Strawberry does.


Blueberry – Rating 3.5/5


Accuracy: As you’ll expect by now, this is the same as the other e-juices but with blueberry as the main flavor instead. The flavor is immediately more comparable to the apple than the strawberry, due to the subtlety of the blueberry. Again this means that the toast and butter come through a little more strongly than they do in Strawberry. Here though, the blueberry flavor is really quite muted. Although you can pick up some characteristic tones, it doesn’t really jump out of the mix and make you pay attention.


Overall: This is another great flavor from Jam Monster, on the whole. It doesn’t quite live up to the standard of the other two in the line-up, because of the unimpressive nature of the blueberry. But it does still go down well, with the base flavor of the buttery toast being enjoyable on its own and being helped down quite nicely by the notes of blueberry. If you like subtler flavors, this could easily be your favorite from the three, but for me it’s just a little bit lacking.


  Jam Monster isn’t going to set the world of vaping alight and be the must-have e-juice everyone’s talking about, but that doesn’t mean you shouldn’t vape it. Every single flavor in the line up is enjoyable in its own way, and while Strawberry absolutely knocks it out of the park, for fruit and candy-loving vapers, every single one is a potential all day vape. At a pretty impressive price of $29.99 for a huge 100 ml bottle, they’re affordable enough to be well worth picking up.

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BFD ALERT: Los Angeles Drops Revised Prop. M Regulations for Cannabis Businesses


Los Angeles just came out with new cannabis regulations

California has lately been on its game with progressive changes to is cannabis laws. Last week, AB 133 passed, making needed technical fixes to the Medicinal and Adult Use Cannabis Regulation and Safety Act (“MAUCRSA” a/k/a SB 94). And then last Thursday, California’s Bureau of Cannabis Control publicly revealed details behind its temporary licensing program (see here for the Bureau’s brochure on that process). And now the City of Los Angeles just released its 42-page revised draft regulations under Proposition M and they contain some interesting, comprehensive, and important changes from the original draft (if anyone forgets what Prop. M is, go here).

Here are some of the highlights from the revised ordinance if you’re looking to have a cannabis business in Los Angeles:

  1. Remember the controversial certificates of approval? Those have been eliminated in favor of a straight licensing program that includes provisional and permanent City licenses. This new licensing program will give applicants greater and better-protected rights to operate within the City’s borders. Upon initial approval, you will receive a provisional license and once you get your state license to operate, the City will issue you a permanent City of Los Angeles license.
  2. Under the original Prop. M draft regulations, certificates of approval were set to issue in four waves in this particular order: Prop. D-compliant existing medical marijuana dispensaries (EMMDs), non-retail registrants (i.e., growers and manufacturers), the social equity program, and then the general public. Formerly, non-retail registrants were only eligible for a certificate of approval in that second wave if they could show they were operating in the City before January 1, 2016. That’s all changed as there is no longer any non-retail registry priority.
  3. The City of Los Angeles Department of Cannabis Regulation will still give first priority in processing EMMD applications that “demonstrate to the Department the EMMD has operated in compliance with the provisions of the limited immunity and tax provisions of Proposition D.” Note that in the previous draft rules, the City required “substantial compliance” with Prop. D. Once applications become available, these EMMD applicants will have only 60 days to get their applications in and, after that, that application window closes indefinitely. And, just like in the original rules for EMMDs, “any mitigating circumstances due to gaps in operations, location change or involuntary closure, ownership, tax payments, etc. must be described in detail for the Department to consider eligibility.”
  4. EMMDs will only be allowed to apply for Retailer Commercial Cannabis Activity (including delivery), which may include on-site cultivation as allowable under Prop. D. On-site cultivation in this scenario may not exceed the size of the EMMD’s existing canopy or square footage of building space as documented by a lease or Certificate of Occupancy prior to January 1, 2017. A maximum of three Licenses per EMMD with a valid Business Tax Registration Certificate will be allowed–the example the City gives is: One Type 10 (retailer), One Type 10 (retailer with delivery) AND one Type 2A OR Type 3A (on-site cultivation if applicable).
  5. One of the biggest boons for EMMDs (and for any cannabis applicant in the city of L.A.) is that “changes in ownership status from non-profit status to for-profit status are allowable.” Now is the time for all LA operators to get away from their precarious non-profit mutual benefit corporations and other bizarre corporate setups and convert to a legal, for-profit business entity that lines up with the California Corporations Code.
  6.  The City of Los Angeles is still working on its social equity program. It is expected that will be finalized and made part of the Prop. M rules sometime in October.

  7.  The general public will be allowed to apply for licenses at the same time as the social equity program opens up. The most positive change for the general public is that they are no longer limited to the number of licenses that will issue in the social equity program. Without a doubt, the general public now has a much better chance to participate in L.A.’s cannabis scene.

  8. Here’s the deal on license caps in the City: all retailers and microbusinesses in the City will be limited to three licenses at the most. There are no license caps for cultivators so long as a given business does not have more than 1.5 acres of plant canopy within the City. Type 7 volatile manufacturing is now allowed (previously it wasn’t), and there are no set caps on manufacturing licenses within the City. There also is no licensing cap for distributors.
  9. As part of the application process, applicants must provide a site diagram to the City. The premises must be a contiguous area and may only be occupied by one business. However, multiple businesses may be located on the same property (as established by an assessor’s parcel number) if each premises has “a unique entrance and immovable physical barriers between unique premises.” Our cannabis lawyers have dealt with these sorts of restrictions in other states and they are usually not a problem and should be dealt with in your lease.
  10.  Applicants must provide a detailed description and plan for hiring “local residents, including making an ongoing good-faith effort to ensure that at least 30 percent of hours of their respective workforce be performed by residents of the City of Los Angeles, of which at least 10 percent of their respective workforce shall be performed by Transitional Workers whose primary place of residence is within a 3-mile radius of the proposed Business.”

  11. An applicant with ten or more full-time equivalent employees must enter into a labor peace agreement.

  12. On the M & A front, neither the City licenses nor the businesses are transferable once a provisional or permanent license issues, but you can still apply to the City to change the business structure, which does allow for you to sell the business so long as the City of Los Angeles approves the sale. See here for more on buying cannabis businesses in Los Angeles.
  13. No licensed retailer of alcoholic beverages or tobacco products can apply for a City of Los Angeles cannabis license.

  14. Foreign companies from outside the U.S. are not allowed in the City, but the City specifically states that this prohibition “does not preclude out-of-state investment in a Business proposing to conduct Commercial Cannabis Activity.” If you are thinking about investing in a California cannabis businesses, you should be sure to join us at our September 28th California Cannabis Investment Forum in San Francisco. But do NOT wait because we must limit the number attendees to 250 and we are getting dangerously close to that already.
  15. The City is still discussing what to do about zoning for cannabis businesses and changes to that proposed ordinance are sure to affect your ability to secure an eligible property.

All in all, Los Angeles is finally starting to embrace comprehensive cannabis control and oversight with a regulatory system that should catapult it into its rightful place as a cannabis powerhouse with serious operators.