If you've spent any time on a dive boat, you've probably noticed them — tanks with yellow and green bands, labeled EANx or Enriched Air. Maybe a fellow diver mentioned they were diving on Nitrox, or your instructor brought it up after your Open Water course. You nodded, filed it away, and moved on. But the question lingers: what's actually in those tanks, and is it worth the extra step? The answer is yes — under the right conditions. And once you understand how Nitrox works, you'll wonder why...

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