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Purdys NPK 3-Part Calculator

Salts & Liquid

Volume you are adding the nutrients to.
Total concentrate added to this volume.
Automatically matches Part 1.
Optional. Leave off to use Parts 1 and 2 only.

Nutrients added

NNitrogen
— ppm
PPhosphorus
— ppm
KPotassium
— ppm
CaCalcium
— ppm
MgMagnesium
— ppm
SSulphur
— ppm

Elemental nutrient values in ppm (mg/L). These are not total ppm/TDS meter readings.