Thought I'd give you guys some information on my new CO2 system. Here is a list of the equipment and cost. Aquatek regulator. 79.99 includes bubble counter/check valve. Insta max reactor 13.00 400 GPH Power head. 15.00 20 ounce paintball CO2 cylinder 25.00 CO2 refill 10 bucks. If anyone has any questions just ask.