Tom wrote: >When used like this, people enter the water with the cylinder off, and >turn it on when neccessary, usually the case when carrying O2 for deco.. I have always been told that diving with the cylinder off could let water into the first stage, through the second stage since the hose would not be under pressure. Is this incorrect or is there a danger of this? Rick Fincher rnf@sp*.tb*.co*
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