Humboldt Nutrients Master AB 2-Part Box Starter Kit Bio-Fertilizer dual-zone digital control of your

dual-zone digital control of your DE lighting

Ligna peat

Each ballast is encased in an all-aluminum housing and is powered by only the best UL/CSA-recognized electrical components

making it more sound absorbing and rustproof

Suitable for 750-1000 watt DE HPS lamps

Humboldt Nutrients Master AB 2-Part Box Starter Kit Bio-Fertilizer dual-zone digital control of yourHumboldt Nutrients Master A&B is a premium two part fertilizer program designed for all plants made with non toxic, high quality ingredients. This premium two part basic starter kit provides the core nutrients in HN's Master A and B schedule along with two other important products for successful gardening: Ginormous, a bloom booster, and White Widow, a powerful mycorrhizal inoculant. This kit acts as a solid base for new or experienced gardeners who