cylindars

I only have aluminum 80s and know high capacity steel has big advantages. I want the extra air and negative buoyancy. I can get a LOW 2400 pressure steel 105 with fresh hydro and VIP for $175. Much cheaper then new or high pressure. My question, for the extra weight and girth and possibly being...

A year ago, I bought tanks for my wife and I. In that year we have used them on 16 dives and had them filled at 5 different dive shops. The pressures after each fill seem to vary wildly and is often overfilled. Here are the markings on the tanks: FABER MADE IN ITALY M8303 21/0154/ 073...