02/09/2018, 02:56 PM
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#6
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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7 dKH is fine. I wouldn't want the level to drop much lower in a tank with corals, but for a new tank, I wouldn't worry. This article might help:
http://www.reefkeeping.com/issues/2004-05/rhf/index.htm
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Jonathan Bertoni
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