Method Seven Evolution HPS Crystal, Black Matte LIGHTING and amino acids

and amino acids

700 gallons of pure RO at a 2:1 ratio

single-point calibration for pH and EC with one solution

Turn atmospheric nitrogen into plant-available ammonia for safeguarding nitrogen levels

innovation

Method Seven Evolution HPS Crystal, Black Matte LIGHTING and amino acidsMethod Seven Evolution HPS Crystal mineral glass lenses, optimized color balancing, unmatched clarity, UV and infrared protection. Truly the best visual experience under HPS lights. A Flash Silver Coating attenuates light, plus it looks cool too. Lens Technology Your go to optical tool for growing under high pressure sodium (HPS) lights. HPS Crystal lenses are crafted from German mineral glass that's scratch resistant, easy to clean and never hazy.