Used 20 lb CO₂ Tank | Brewing & Aquarium Applications

Used 20 lb CO2 Tank for Draft, Beverage, and Aquarium Use

A used 20 lb CO2 tank is a cost-conscious way to add larger CO2 capacity to a kegerator, keezer, multi-tap draft system, beverage setup, or compatible aquarium application. The larger size is useful when a 5 lb cylinder runs out too quickly.

Used cylinders may show cosmetic wear, and exact appearance can vary from the photo. Tanks are sold empty and must be filled or exchanged before use. Always confirm that the cylinder, valve, regulator, and intended gas supplier are compatible before relying on any CO2 tank in a draft or aquarium system.

Before you buy

• Ships empty: this product is the cylinder only, not a filled CO2 tank.
• Check compatibility: verify regulator, valve, and local fill or exchange requirements.
• Local option: Vista-area customers can use our 20 lb CO2 tank exchange when they have an eligible empty tank.

For other sizes and filled local exchange options, browse gas cylinders and exchanges.