You know...sometimes I wonder if it isn't more practical for older aged folks to use nitrox...let's say NN1. Of course decrease the depth ceilings...but timewise...well..........just a thought. Anyone have any studies which might substantiate this thinking? p.m. ************************************************** EO2 Phillip H. Middleton, USN, UCT-2 * PADI CD-19505 * middlph@ok*.mi*.ed* * (transfer in June to UNC, Chapel Hill Med. Inst.)* **************************************************
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