Method Seven Evolution HPS Crystal, Black Matte LIGHTING single-point calibration for pH and

single-point calibration for pH and EC with one solution

Compatible with many herbicides and most fertilizers

Flexible Application: 100% soluble and compatible with soil

drip and micro-spray zones

Russet can be applied in all food and non-food crops and in a tank addition in IPM programs for improved pest and disease control

Method Seven Evolution HPS Crystal, Black Matte LIGHTING single-point calibration for pH andMethod 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.