Buying used tanks can be risky, however one must take into consideration the hydo /vis dates and the condition if the tanks. If the tank looks like it's been banged around and generally abused and happens to be out of hydo, I'll walk. I bought two Al 80's a couple of years ago that both needed a visual. The tanks were in perfect condition and passed. The cost? $100 for the tanks and $24 to Divers Supply in Tampa for the vis and air fill. Why would anyone buy a new Al tank? Too many good used ones out there that are cheap.:tree: Bob :tribute: