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Old June 26th, 2003
cdavis cdavis is offline
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Hi Deepthought,

I just open the valves, always could. From what I've read, this must be BTV. It seems to get a little harder beyond 20 m, but I do very little diving below15 m. Whats neat is that it seems to be something you can learn. Do a search for BTV. Lots of threads and much information
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