Master-B Options:Master-B, 5 gal. the size we claim is

the size we claim is in fact the actual size

• Reduce fungus and bacteria by reducing their ability to adhere to the plant

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

allowing for versatile placement in growing spaces with low ceilings

Magnesium sulfate

Master-B Options:Master-B, 5 gal. the size we claim isNPK 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