The Planted Tank Forum - View Single Post - DIY fertilizer not dissolving
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post #9 of (permalink) Old 03-22-2013, 08:09 PM
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Join Date: Dec 2005
Location: Sacramento, CA
Posts: 19,673
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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