Scuba diving lessons : how to use an air tank in scuba diving

In scuba diving, multiple air tanks can be used depending on whether it is a cold-water dive, recreational dive or decompression dive. Use a 50-percent nitrox mix in a scuba tank to increase the oxygen content with advice from a scuba instructor in this free video on scuba diving. Expert: Gregg Eddy Contact: Bio: Gregg Eddy is a certified scuba instructor who has been teachi…