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Hiya - while waiting for my 12l twins for Xmas, I was considering the following. Whilst they will be O2 clean I wont always be diving nitrox. A colleague of mine suggested getting my pony O2 cleaned and using a 40% mix (I`ve only got the basic nitrox card) for deco. Now I wont be doing major deco dives but would this be any use when doing my 5m safety stop on dives > 18m ?? Will I feel any less knackered or is this just a waste of time & money
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