Master A & B Kit Soluble Potash (K2O)…………………………………………

Soluble Potash (K2O)…………………………………………

………47 spores/cc

Humboldt Nutrients 3-Part is a complete essential nutrient system for hydroponics as well as other growing mediums

or human health

Master A & B Kit Soluble Potash (K2O)…………………………………………Kit contains the Following: Master A 32oz. Master B 32oz. Ginormous 32oz. Calyx Magnum 32oz. Humboldt Nutrients Master A&B is a premium two part fertilizer program designed for all plants and made with high quality mineral ingredients. Our Premium 2 Part Basic Starter Kit provides the base nutrients in our Master A&B, along with Ginormous(bloom booster) and Calyx Magnum(Cal Mag Supplement).