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Unread 05/07/2012, 04:49 PM   #3
Randy Holmes-Farley
Reef Chemist
 
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Join Date: Apr 2001
Location: Arlington, Massachusetts
Posts: 86,233
IMO, it is OK at pH 8.55, but if you want to lower it, aeration is the best bet. Dosing the limewater only at night may be a good choice as well.

Dosing vinegar may be a fine choice, but you need to realize there are other effects (like bacterial growth and lower O2).

This has more:


High pH: Causes and Cures
http://reefkeeping.com/issues/2005-03/rhf/index.htm


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