Master A & B Kit


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).