Vape Tanks
Glass reservoirs that sit on a mod or pen, hold your liquid and house the coil. Mouth to lung tanks for a tight cigarette like draw through to sub ohm tanks built for flavour volume. Shipped within Canada.
A tank is the glass or plastic reservoir that sits on top of a mod or a pen, holds your liquid and houses the coil. It decides the draw you get, which coils you can use and therefore which liquid and nicotine strength suit you. Choosing a tank is really choosing how your vape will feel.
Tanks are also the part most likely to leak, crack or gurgle, and almost all of that is preventable once you understand how airflow, fill level and seals interact. This page covers tank types, airflow, capacity, filling technique, cleaning and the specific causes of the problems people most often blame on a faulty tank.
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Mouth to lung, restricted and sub ohm tanks
Mouth to lung tanks have narrow airflow and take high resistance coils. The draw is tight and cigarette like, vapour is modest, liquid consumption is low and they suit the higher nicotine strengths Canadian retail permits. For anyone who has recently stopped smoking this is usually the right tank.
Sub ohm tanks have wide airflow and take low resistance coils. The draw is open, vapour is substantial, liquid disappears quickly and nicotine must be low. They are built for flavour volume and clouds rather than discretion.
Restricted direct lung tanks sit between the two, with a draw that is open but not wide. Many modern tanks are adjustable enough to cover more than one of these categories, which makes them a better first purchase than a tank locked to one style. Our replacement coils listings show which resistances each tank accepts.
Airflow, and how to actually use it
Airflow control is usually a rotating ring at the base. Opening it lets more air in, which cools the vapour, increases volume and softens flavour. Closing it concentrates the vapour, warms it and intensifies flavour, at the cost of a tighter draw.
It is the cheapest tuning available and most people never touch it after the first day. That is a mistake, because the right setting changes with the coil, the liquid and even the weather. A setting that was perfect with a fresh mesh coil often wants closing slightly as the coil ages.
A useful method is to close the airflow completely, then open it a fraction at a time while drawing, and stop at the point where the draw stops feeling strained. That is usually very close to the flavour peak. If a tank gurgles, open the airflow slightly. If vapour feels thin and cold, close it.
Tank styles compared
Read the table across rather than down. The airflow, the coil resistance and the nicotine strength form a set, and mismatching them is what produces an uncomfortable or disappointing setup.
| Tank style | Airflow | Coils | Nicotine | Liquid use | Suits |
|---|---|---|---|---|---|
| Mouth to lung | Narrow | 1.0 to 1.8 ohm | 10 to 20 mg salt | Low | Recent ex smokers, discretion |
| Restricted direct lung | Medium | 0.6 to 1.0 ohm | 6 to 12 mg | Moderate | A middle ground, versatile |
| Sub ohm | Wide | 0.15 to 0.6 ohm | 3 to 6 mg freebase | High | Flavour volume and clouds |
| Rebuildable | Fully adjustable | Built by hand | Varies | Varies | Experienced hobbyists only |
Rebuildable tanks let you wind your own coils and wick them yourself. They are cheaper to run than anything else and give complete control, but they require you to understand resistance and battery limits properly. They are not a first tank, and a regulated mod is essential with one.
Capacity, glass and refill frequency
Tank capacity typically runs from 2 mL to 5 mL. Larger is more convenient but makes the whole setup taller and heavier, and a big tank on a small mod looks and feels wrong.
Match capacity to consumption. A mouth to lung setup uses perhaps 2 mL to 4 mL a day, so a 3 mL tank is a full day. A sub ohm setup can use 10 mL or more in a day, which means a 5 mL tank still needs refilling several times. Buying a sub ohm tank without budgeting for that liquid is a common surprise, and our vape juice range is where that recurring cost actually lands.
Most tanks use glass, which gives the best flavour and resists cracking from liquid but breaks when dropped. Buy a spare glass with the tank. Plastic sections survive drops but can craze with certain citrus and menthol flavours. Spares are in accessories.
Filling without creating problems
Most tanks fill from the top under a sliding or screwing cap. Open it fully rather than part way, aim the bottle nozzle at the side of the fill port, and let liquid run down the inside of the glass.
Never pour liquid down the central chimney. That tube is the airway, and liquid in it goes straight to your mouth on the first draw and then out of the base as it drains. It is the single most common cause of a tank that appears to leak immediately after filling.
Leave a few millimetres of air at the top. Tanks rely on a slight vacuum to hold liquid against the coil, and filling to the absolute brim removes it. Close the cap firmly, then stand the tank upright for a couple of minutes before vaping so the coil settles.
Why tanks leak, in order of likelihood
Leaking is rarely a manufacturing fault. Five causes account for nearly all of it, and they are worth checking in this order.
- Liquid poured into the central airway during filling.
- Overfilling, which removes the air gap the tank needs.
- A coil that is not seated squarely, or has been overtightened so its seal is distorted.
- A perished or flattened O ring, which is a consumable and cheap to replace.
- Liquid that is too thin for the coil, flooding it faster than it can vaporise.
Temperature and pressure changes make all of the above worse, which is why tanks leak on planes and in hot cars. Empty a tank before flying, as our guide to taking a vape on a plane explains, and store the device upright rather than on its side.
Cleaning a tank properly
Tanks need cleaning when you change flavour families and roughly monthly otherwise. Residue builds on the glass and in the airway, dulls flavour and eventually narrows the draw.
Disassemble completely, keeping track of the O rings. Rinse every part except the coil in warm water, then dry thoroughly. For stubborn residue, warm water and a little unscented washing up liquid is fine, followed by a very thorough rinse. Let everything air dry completely before reassembly, because water trapped against a new coil will dilute the first tank and taste odd.
Never put a coil through this. Coils are consumable and washing one simply ends its life sooner. Never put tank parts in a dishwasher, which will craze plastic and perish seals.
Choosing a tank that matches your device
Check the connection first. Almost everything uses a 510 thread, but confirm it rather than assume. Then check the diameter against your mod: a 24 mm tank on a 22 mm mod overhangs and looks wrong, and a narrow tank on a wide mod looks equally odd.
Then check the coil range against what your device can deliver. A sub ohm tank whose coils want 60 W is pointless on a device that maxes out at 25 W, and a mouth to lung tank on a 200 W mod is fine but you will never use most of the range.
Finally check that coils for the tank are actually stocked in Canada. A tank whose coils are no longer imported becomes useless very quickly, and it is the most common reason a tank people liked ends up in a drawer. Everything we list has a supply line, and vape kits avoids the question entirely by pairing tank and device for you.
Gurgling, spitting and flooded coils
A gurgling tank is a flooded one. Liquid has collected in the airway or the coil housing faster than the coil can vaporise it, and the sound is air bubbling through it. Spitting is the same problem at the point where the liquid reaches the hot wire.
The immediate fix is to clear the airway. Take the tank off, hold a rolled tissue against the base and blow gently down the mouthpiece, which pushes the pooled liquid out. Then fire the device for a second or two without drawing, which vaporises what remains on the coil.
Preventing it is a matter of technique. Draw more slowly and gently, since a hard fast pull drags liquid past the coil rather than through it. Open the airflow slightly. Avoid leaving the tank on its side. And check the liquid ratio, because liquid that is too thin for the coil will flood repeatedly no matter what else you do. Our why a vape stops hitting walkthrough covers the related symptoms.
Canadian rules and delivery
Tanks are hardware and contain no nicotine, but they are sold alongside products governed by Tobacco and Vaping Products Act, which caps retail nicotine at 20 mg/mL and restricts packaging and promotion. Provincial rules are tracked in vaping laws by province.
We ship only inside Canada behind an age gate, with carriers and timings on our shipping and delivery page and faults covered on our returns policy page. Glass breakage from a drop is not a manufacturing fault, which is why buying a spare glass at the same time is sensible.
When flying, empty the tank completely and carry the device in cabin baggage, as Transport Canada lithium battery rules requires for anything containing a lithium cell. Cabin pressure changes will push liquid out of a full tank regardless of how well it is sealed.
Common questions
Why is my vape tank leaking?
Check five things in order: liquid poured into the central airway when filling, overfilling with no air gap left, a coil not seated squarely or overtightened, a perished O ring, and liquid too thin for the coil. Manufacturing faults are rare compared with these.
What is the difference between a mouth to lung and a sub ohm tank?
Airflow and coil resistance. Mouth to lung tanks are narrow, take coils above 1.0 ohm, produce modest vapour and suit high nicotine. Sub ohm tanks are wide, take coils below 0.6 ohm, produce large clouds and need low nicotine because you inhale far more aerosol per puff.
How do I fill a tank without flooding it?
Open the fill port fully, aim the nozzle at the side so liquid runs down the inside of the glass, and never pour into the central chimney, which is the airway. Leave a few millimetres of air at the top, because the tank needs that gap to hold liquid against the coil.
How often should I clean my tank?
Whenever you change flavour families, and roughly monthly otherwise. Disassemble fully, rinse everything except the coil in warm water and dry completely before reassembly. Never wash a coil and never put tank parts in a dishwasher.
Will any tank fit my device?
Almost all use a 510 thread, but check the diameter against your mod and check the coil wattage range against what your device can deliver. Also confirm the coils are still stocked in Canada, since a tank with no available coils becomes useless quickly.
Why does my tank gurgle and spit?
It is flooded. Usually the cause is draws that are too hard, a coil not seated correctly, or liquid too thin for the coil. Opening the airflow slightly helps, as does drawing more gently. Clearing the airway with a rolled tissue removes liquid already sitting in it.