I'm gonna make a thread in here about the CO2 method once I get my paper back that had it written on it. So check it out later. If this method is a reliable, constant, and long lasting way to produce CO2 then I think it'll make a lot more people be able to give their plants more CO2. Although the materials for it were kind of wierdly named so I'm not sure exactly where you'd come across finding them. I'll do a search for it right now so that I don;t have to wait till later.