The advantages of nitrox include longer no decompression limits, or an increased safety margin.
Divers often describe less fatigue after diving also.
It is rapidly becoming the standard breathing gas for divemasters, instructors and middle age divers. The availability of nitrox is growing astronomically. It is now found in most resort areas and on most live aboard dive boats. The course teaches recreational divers how to use nitrox to enhance dive safety to depths to 130ft. The course covers physics, physiology, equipment and safety precautions.