Buoyancy issues after ~75 minutes

[BabyLitigator]

It may have been ears. A lot of up and down to shallow depths (out of back gas, repeat, deco gas failure, repeat, etc.). My ears took longer to recover than usual and the buoyancy went after those drills.

 

[crofrog]

I assume you were too light, right?

Have you ever emptied your tanks as much as in this dive before? If yes, were you using the same amount of weight with the same suit and undergarment, and in the same type of water?

Specially as stages get light. The regulator and valve stay heavy and the tails get light.