The Planted Tank Forum - View Single Post - Am I missing a fert ?
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Old 12-23-2012, 07:22 PM   #4
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Do you need GH booster? What is the GH of the tank and of the water you will be using for water changes? If the GH is already holding stable, at least 3 German degrees of hardness, you probably do not need GH booster.
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