Posted by JohnB on July 24, 2001 at 22:56:37:
In Reply to: Re: WALK around on the bottom?! Huh? posted by AADIVER on July 24, 2001 at 10:53:06:
if for some reason you are having a good time heads down and have been there for a bit and your tank is getting empty (steel or NOT) it will become more buoyant and you can just let some bubbles out...NOT "smell bubbles" please! The OZONE LAYER!!
Just one example of the valves use!