The Planted Tank Forum - View Single Post - Fishless cycle help
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post #15 of (permalink) Old 12-07-2012, 07:02 AM
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Join Date: Jan 2011
Location: Syracuse, NY
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Baking soda is sodium bicarbonate, not calcium bicarbonate. My original advice stands. GH could be 180 from magnesium. Water softeners remove calcium by replacing the calcium ion with sodium.
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