Humboldt Nutrients Master A Size:5 gal Select CO2 ppm levels at

Select CO2 ppm levels at 1000 ppm

It has a connection at each end of the lamp

Cold water processed to preserve natural occurring growth hormones

Benefits include:

This effect is created by signaling to the plant system that environmental stress is incurring

Humboldt Nutrients Master A Size:5 gal Select CO2 ppm levels atHumboldt Nutrients Master A&B is a premium two part fertilizer program designed for all plants and made with the highest quality mineral ingredients. What sets the Master Series apart from its peers is the amino chelation of heavy metal micronutrient content. Other synthetic 2 part and 3 part programs use cheaper imported Chinese chemical chelating agents called EDTA and EHDDA, to make micronutrients available. These are highly toxic chemicals and are