The Planted Tank Forum - View Single Post - DIY fertilizer not dissolving
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Old 03-22-2013, 07:09 PM   #9
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If you don't try to make such a concentrated solution, you won't have problems dissolving the chemicals. I don't see any advantage to using higher concentrations than what dissolves easily and quickly. I use tap water, which is pretty soft, and add about 1 tsp of KNO3 to 16 ounces of water, plus smaller quantities of the other chemicals. Never a problem.
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