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Made of high-quality brushed aluminum Holds 5 pounds of CO2 Can be filled easily at any USA or Canada fill station The SR Aquaristik 5 LBS Aluminum CO2 bottle is a key component to any aquarium CO2 system. The aluminum bottle is much lighter and more attractive than the steel bottle and will not rust or cause discoloration from sitting inside aquarium cabinets. This bottle comes standard with a CGA 320 valve and is compatible with most North American CO2 regulators.

SR Aquaristik 5 lbs Aluminum CO2 Bottle (Empty)