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Thanks for all the help with my Nitrox question. I'm probably going to go ahead with the ANDI course. The deciding factor is really that my buddy took it. So here's the scenario: I generally dive with the cattle on boats out of San Pedro to the Channel Islands. It's no problem having Nitrox along; the divemaster is ANDI. (am I the only one on this forum without his own boat?) So if I play by the IANTD rules, and don't need to be oxygen clean below 40% O2, can I use the same cylinder and regs I use with a nitrox fill to get a boat fill and continue diving ? I understand that my cylinder will still be somewhat enriched from any nitrox remaining in the cylinder. I am going to get more equipement and solve this problem eventually. Then, depending on my plan, if the first dive is going to be in the 120-150 foot range, I would make it on air, then switch to nitrox for later dives for more time at shallower depths. Just looking for comments... Question on lights: I have bad luck with them. I've flooded a King Pellican twice in only a few dives with it. If you are familiar with it, I know there are two O-rings on it and that I need to have the lens screwed down to the second ring. I've also flooded my favorite light after many successful dives with it (they all go sooner or later, I guess). Don't worry; at night I carry 3 or 4. Two of these 3 floods were daytime. given this track record, I'm want even more at night. So what kind of lights does the technical community trust?
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