[Iconic Muffinman]

I am new to this whole HPA buisness (just got ant ATS AT-10, never used anything other than Co2 powered guns in my life) and i was wondering if it is possible to hook a scuba tank DIRECTLY to your marker by using a remote line, or if the scuba unit needs to be used to re-fill the HPA tank? ATS guns only need a constant pressure of around 1500-2000psi or so to cycle i think, so it would seem reasonable to me that i could set the tank directly to the gun, and it would be some time until it stooped below that level of pressure. ANY advice will help!!!