CO₂ & cartridges

Standard 16g threaded food-grade CO₂ cartridges, the same ones used in soda chargers and some bike pumps. They're widely available globally. Tanky sells 5-, 10-, and 20-packs in the store. One cartridge per 2L fill. Two for the 5L.

One 16g cartridge powers a full 2L fill, about 10-12 standard pours. For the 5L, you'll use two cartridges (~25-30 pours). Cartridges are single-use. When the pour slows or fizzles, swap. Cheap and quick, keep a few spares on hand.

Two-step fix: (1) make sure the keg has been depressurised first by pulling the tap until no more flow comes out, this releases pressure on the seal. (2) Use the rubber-grip tool that came in the box (or a tea-towel) for grip, twist anti-clockwise firmly. If it still won't shift, email us a photo and we'll send a replacement regulator under warranty.

In Australia, yes. For the US launch, every Tanky also includes a free CO₂ starter pack fulfilled locally by ground from our US warehouse. New Zealand remains waitlist-only for now and is not part of the AU/US preorder launch.

Yes, CO₂ is the same gas used in commercial beer taps, soda fountains, and SodaStream. Tanky cartridges are food-grade. You're not exposing your drink to anything it hasn't encountered at a bar.

Usually it's one of three things: (1) over-tightening the cartridge wastes gas, tighten only until hiss-then-stop; (2) leaving the keg pressurised between pours drains the cartridge, vent pressure when you're done; (3) filling past the max-fill line means less headspace and more CO₂ needed. If all three look right, email us and we'll sort you out.

They're standard 16g threaded food-grade CO₂ chargers, the same type used in soda chargers and some bike pumps, so they're stocked at kitchenware, homebrew, and sporting stores as well as online. The easiest guaranteed-fit option is Tanky's own 5-, 10-, and 20-packs. AU and US launch orders include a free starter pack; additional packs can be ordered from Tanky where available.

Keep them somewhere cool and dry, out of direct sun, and never heat or puncture a full one. Sealed and dry, they keep indefinitely for any practical purpose, so it's worth holding a few spares. Don't store loose cartridges rolling around in a hot car.

Make sure it's fully spent first (press the piercing pin, there should be no hiss left), then recycle it with steel or metal recycling, the cartridges are steel. Never put a still-pressurised cartridge in general waste or expose it to heat.