OP
yeohcheeweng
New
Thanks, Bwerb, Mikemill, Teamcasa, Thalassamania & Elan for the quick and detailed replies. I am planning such a deep dive with a buddy and was trying to work out what is the safest cylinder pressure at 50m and 60m when we should be ascending. However, the dive site where we intend to do the deep dive has only AL80 cylinders and the usual volume is 200bar (2900psi). How much extra air can an AL80 cylinder hold safely?