01/10/2017, 07:48 PM
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#10
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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Lime contains calcium hydroxide (or oxide), and provides calcium and alkalinity at the approximate ratio in which corals consume them:
http://reefkeeping.com/issues/2005-01/rhf/index.htm
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Jonathan Bertoni
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