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  1. fono555

    KNO3 and Urea

    I currently dosing macro with KNO3, K2SO4 and KH2PO4. I plan to replace a portion of kno3 by Urea. Can I mix KNO3, K2SO4, KH2PO4 and Urea together? What the proportion between kno3 and Urea I should use for the nitrate dosing? 1/5 Urea and 4/5 kno3?
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