Hey everyone, I have a question. I have an extra 5 pound C02 tank laying around and i was wondering if I could convert it for beer gas use? From what I read on the micromatic web page the 'dip tube' goes down 3/4 of the way to get a proper mixture of gas. Could I modify the dip tube of the co2 tank after having the valve removed from the tank? Or are the threads different? Also is the tank hydro-tested for co2 only?