The Planted Tank Forum - View Single Post - KH and plants
Thread: KH and plants
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Old 04-18-2012, 12:14 AM   #2
ray-the-pilot
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I don't believe that anyone really has 0 KH because the pH of water with 0 KH would be about 4.3. I suspect that your KH is below the test limit of the test you are using. Anyway, I have no experience using such low KH water. I mix my RO with tap to get 4 deg KH.
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