Hey everyone,

The cheapest way to get CO2 is just to use the CO2 canisters used in paintball. All you have to do is take the CO2/regulation device from the paintball gun, and incorporate it into your grow space/cabinet. Plus side to doing all this..? Costs about $.75 to refill a large CO2 bottle. Been doing this for a while, I will admit, it was a bit tricky setting this up, but I'm a do it yourselfer, so I didn't mind. :thumbsup:

- mike :jointsmile: