melfox26 once bubbled...
For Nitrox to be of any benefit anyway, you'd have to be at depths deeper than what you would be certified for just OW. I waited until after AOW to get my Nitrox cert.
Mel
PADI Rescue Diver
I wouldn't agree with this. For lower FO2 mixes possibly, but the higher mixes, 38, 40 and above, work very well at shallower depths. Depends on what you are doing and why. Also, older divers can benefit with EAN at any reasonable depth.
Phil