Master-B Options:Master-B, 5 gal. Highly reflective Omni-Max film

Highly reflective Omni-Max film

you can choose to turn the unit off if local rainfall meets your needs

Magnesium sulfate

A high quality crop needs a clean and effective flush to reach its full potential

the size we claim is in fact the actual size

Master-B Options:Master-B, 5 gal. Highly reflective Omni-Max filmNPK 1 5 6 Humboldt Nutrients Master A&B is a premium two part fertilizer program designed for all plants made with non toxic, high quality ingredients. Humboldt Nutrients has formulated this vigorous 2 part nutrient solution for use on any plant, in any growing medium and contains no EDTAs. The Humboldt Nutrients team of chemists and agronomists emphasize balance and consistency with all our formulas. Master A&B is formulated to provide your favorite