A planted aquarium essential! Complete your pressurized CO2 system for your planted tank with the UNS CO2 Paintball Cylinder. Available in two sizes, this CO2 paintball cylinder features a clean appearance and simple functionality. The cylinder offers a convenient on and off valve that eliminates the need for a pin valve and prevents accidental tank dumping during installation, making this cylinder a time and cost-effective CO2 solution. The UNS CO2 Paintball Cylinder was designed to be used specifically with the UNS Dual Stage Mini CO2 Regulator for best results. Pairing alternative CO2 regulators voids any warranty claims. CO2 reserves and depletion rate may vary depending on various external factors such as usage, aquarium plant requirements, and tank size. Specifications: Volume: 16 OZ / 0.5L Working Pressure: 124BAR / 1800PSI Test Pressure: 207BAR / 3000PSI Height: 8.5" / 215MM Weight: 1.8LB / 0.82KG Material: AA6061 Note: Bottle does not come filled with CO2 gas. Please fill the bottle at your local welding supply, paintball, or brewery store. Looking for a larger cylinder? Click here for the UNS CO2 Paintball Cylinder - 24 Oz. ** This item does not come with the UNS Mini Regulator as pictured