The send you a couple of tank to regulator gaskets with it. You can also get them where they refill the CO2 tank (dirt cheap). My custom aquatics setup has been running flawlessly almost 3 months now. For the price, its a no-brainer.
FILSTAR Pimp #2
75 gal heavily planted,50/50 Black beauty,Eco-complete substrate, Pressurised CO2 with solenoid, ph controller, AB Reactor 1000, 330 watts 9325K GE PC lighting,Ehiem Liquidoser, 2-Filstar xp3 canisters.