Posted by Bob on March 25, 2002 at 20:46:10:
In Reply to: Old air posted by Bob on March 24, 2002 at 13:36:33:
Bob,
Only the air on the bottom is "bad" turn the tank upside down and open the valve for 10-15 seconds. That will let out the bad stuff and you can get the rest of the tank filled with good air. You'll want to do this quaterly if you don't dive much.....
Bob