Master-A Options:Master-A, 2.5 gal. Displays current temperature and humidity

Displays current temperature and humidity as well as min/max temperature and humidity history

They come in a 2 piece set

workplaces anywhere that can benefit from purer

It doesn’t mask them—it neutralizes them

This 5 gallon bucket system is so simple yet grows large plants efficiently

Master-A Options:Master-A, 2.5 gal. Displays current temperature and humidityNPK 4 0 3 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