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the centerpieces of HN's natural feeding schedule
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finishing solution for all plants growing in soil
as it allows use with 120V
Four-way output control: 60%
Master-B veg-and-bloom the centerpieces of HN's naturalNPK 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
