CAPTAIN SINBAD
Contributor
Tech-2 divers who dive with 2 bottles, say you are diving with an AL-40 (Oxygen) and an AL 80 (Nitrox 50,) how do you align your tanks? Is the gas you switch to first, AL-80 on the outside (left) or inside (right)? Is there a standardization that addresses this and may I know the reasoning behind any preference?