RoyN:Yes Ben, I lasted THAT long underwater. Its all thanks to the art of yoga. But don't worry, I was monitoring it alot. I stop at the safety around 500 psi at 15 ft and I saw the whole view from that point and today was just so clear! My safety stop last about 4 to 5 minutes because sometimes I miss things that float by, divers that need help, or something else. There was a HUGE school of blue fish and it was like combination of 3 to 4 schools of them gathered into one huge school and swam in perfect formation. Otherwse, yeah, I had a great time. I think part of me is still there.
Roy.
This is being said with concern for a fairly new diver and being very polite.
Arent you pushing the envelope a bit dropping your air that dangerously low bud??
150 psi Is not a good idea in my opinion!