Free EI (Estimative Index) fertilizer dosing calculator for planted aquariums. Enter tank volume + plant load, get exact teaspoons of KNO3, KH2PO4, K2SO4, and CSM+B per dose.
EI (Estimative Index) dosing oversupplies macro + micro nutrients to ensure plants are never limited, then resets via 50% weekly water change. Doses are scheduled 3x per week (Mon/Wed/Fri for macros; Tue/Thu/Sat for micros).
Standard reference: Tom Barr\'s Barr Report + Estimative Index thread on Plantedtank.net.
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