My wife and I are new to diving (her 10 dives in 10 years, me just certified)
We just got back from Cozumel where we did 13 dives in 5 days. (yay)
I weigh 250 lbs, my wife weighs 120 lbs so I use more air than she does. She has 1000 psi when I have 500 psi.
She has suggested that at the...