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  1. S

    fertilizing a 77 gallon tank. Please help.

    Hi, The EI (Estimative Index of Dosing) method says that for a 20 gallons with 5.5 watts/gal the dosing will be: 1/4 teaspoon of KNO3 4x a week (every other day) 1/16” teaspoon of KH2PO4 4x a week (every other day) Traces added on off days as the macro nutrients, so 3x a week, 5mls each time...
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