Recertified 5 lb Steel CO2 Cylinder

Yes, a 5 lb CO2 tank is a popular size for home kegerators and draft beer systems. It carries enough CO2 to push many kegs before a refill and fits inside or beside most kegerator cabinets. Connect it to a CO2 beer regulator on the CGA320 valve to set your serving pressure.

Yes, a 5 lb CO2 cylinder works well for planted aquariums, supplying steady CO2 for healthy plant growth. Pair it with an aquarium CO2 regulator and a bubble counter on the CGA320 valve to dial in the dose. Its capacity means far fewer refills than small disposable cartridges.

This is a standard CO2 tank without a siphon or dip tube, so it draws CO2 gas from the top of the cylinder. That is the correct setup for kegerators, draft beer, and aquariums, which need CO2 gas rather than liquid. Siphon tube tanks, used to draw liquid CO2, are a different configuration.

A 5 lb CO2 tank typically dispenses in the range of six to ten five-gallon kegs, depending on serving pressure, line length, and how often the system is opened. Higher carbonation or long draw lines use more gas per keg. Watch the regulator gauge and refill before it runs out mid-pour.

A recertified CO2 tank is a used steel cylinder that has been hydro-tested, DOT and TC approved, freshly painted, and fitted with a CGA320 valve before sale. Reconditioning restores it to reliable service at a lower price than a new tank. Each cylinder is pressure-checked, so it performs like new.

Many homebrew shops, welding gas suppliers, and some sporting goods stores refill or exchange 5 lb CO2 tanks, and cost varies by region. Because you own this cylinder, you can refill it rather than pay rental fees. Ask whether the shop fills on site or swaps for a pre-filled tank, since exchange may hand back a different cylinder.

CO2 tanks commonly range from 2.5 lb and 5 lb up through 10 lb, 20 lb, and larger. A 5 lb tank is a practical middle choice for a home kegerator or aquarium, balancing run time against a compact footprint. Choose a larger tank if you serve high volume or want fewer refills.

No, CO2 tanks are measured by the weight of CO2 they hold, not by gallons, so 5 lb is the correct term rather than 5 gallon. If you searched for a 5 gallon CO2 tank, a standard 5 lb cylinder like this one is usually what you need. The 5 lb rating is the weight of liquid CO2 inside when filled.

Yes, this recertified CO2 tank is hydro-tested and DOT and TC approved before sale, so it meets the same safety standards as a new cylinder. It is on a 5 year retest interval, with the last test date stamped into the collar. A refill station checks that date before filling it.

No, this tank ships empty for transport safety and does not include a regulator. Have it filled with food-grade or beverage-grade CO2 at a local supplier, and add the regulator that matches your use, such as a beer or aquarium CO2 regulator on the CGA320 valve. Shipping empty is a legal requirement for compressed gas cylinders.