Add extra weight for air in tank?

[FPDocMatt]

Your lungs should be 1/2 full when you are neutral, not completely full.
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Yes, I reread the relevant portion of the course. It says with a normal breath of air (not full lungs).

 

[RonFrank]

Go to the pool and do a weight check. Use an empty tank. You could do this when you do your AOW pool sessions. The LDS should have some empty tanks laying around. Empty = 500psi. Remember to add 6lbs when diving in salt vs. fresh.