The Planted Tank Forum - View Single Post - will my ph go too low?
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post #3 of (permalink) Old 11-04-2015, 01:47 PM
Diana
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That substrate will remove the carbonates from the water.
I would add enough potassium bicarbonate to keep the KH about the same as the preferred GH of the livestock as an initial target. Fine tune it to maintain the pH you want.
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