Pay in 4 interest-free payments of $6.45 Learn more
Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
29 – 1 gal
Calcium (Ca)…………………………
93 – 5 gal
Glomus intraradices………………
000 cfu/cc
Master B Retail prices:2.5gal 29 – 1 gal1 5 6 Humboldt Nutrients Master A&B is a premium two part fertilizer program designed for all plants and made with the highest quality mineral ingredients. What sets the Master Series apart from its peers is the amino chelation of heavy metal micronutrient content. Other synthetic 2 part and 3 part programs use cheaper imported Chinese chemical chelating agents called EDTA and EHDDA, to make micronutrients available. These are highly toxic chemicals
US$ 28.99
US$ 24.99
US$ 28.99
US$ 56.95