LatitudeAdjustment - 1/12/2022 9:55 AM
Back in the days of J valves we ran tanks low, pulled the lever and began our accent.

I’m guessing we sometimes arrived at the surface with less air pressure in the tank than surface pressure allowing salt water to backflow into the tank. My old 72’s all died from rust :(

You either did the same or your dive shop isn’t keeping up with compressor maintenance :(