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EI Method Fertilizer Dosing Calculator

Calculate weekly Estimative Index dosing for KNO3, KH2PO4, and K2SO4 in a planted tank.

gal

KNO3 (Nitrate) per Dose

0.1250 tsp

KH2PO4 (Phosphate) per Dose

0.0313 tsp

K2SO4 (Potassium) per Dose

0.0625 tsp

KNO3 Weekly

0.375 tsp

Note

Standard EI: 50% water change weekly to reset nutrient levels.