I've looked at those on many occasions, however I worry about (and have read other's experiences) the longevity of those valves.
I would love to see (and hear the experiences) of someone running these in critical areas for many years, and if they would do it again 
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Single System Setup: 210G SPS reef, 225G FOWLR, 72G water change, 50G frag, 120G sump. I promise a journal at some point! (anyone need some coral frags? I likely always have stuff that is frag-ready)
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