Tired of paying a fortune to fill up all your co2 tanks? All you need is a bulk co2 tank that can be picked up at a local welding supply company. Be sure to ask for a tank with a dip tube. Once you have your Bulk Co2 tank, all you need is one of our co2 fill stations and a scale and your set. Be sure to read and follow all instructions and always use a scale to make sure you don't overfill your tank.