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![]() Quote:
http://www.advancedaquarist.com/issues/nov2002/chem.htm "If, for example, you add too much of a calcium supplement, you will drive down alkalinity as you get precipitation of calcium carbonate in the tank. Likewise, adding too much of an alkalinity supplement can result in reduction of calcium. " I wonder if adding aragonite to my top off water reservoir has any benefit. The fresh water is low in PH and should very very slowly dissolve the aragonite and add calcium and alk into the top off water. |