Fertilizer Dosing Calculator

Calculate macro and micro fertilizer doses using the Estimative Index (EI) method.

Results

Visualization

How It Works

The Estimative Index (EI) method provides excess nutrients so plants are never limited. Macros (KNO3, KH2PO4, K2SO4) are dosed 3x per week on alternating days with micros. A 50% weekly water change resets nutrient levels. Without CO2 injection, reduce all doses by half to avoid algae.