HM Digital 1000 ppm NaCl Calibration Solution, 20 ml sachets, box of 20 nutrients-and-supplements The weather-resistant housing is tough

The weather-resistant housing is tough and durable for years of trouble-free use

Compounding performance in multi-light configurations

This system combines our Phantom 6" air-cooled reflector with a Phantom 750W dimmable 120V/240V Digital Ballast and a GE Lucalox 750W High Pressure Sodium lamp

stimulating dense

Highly experienced gardeners designed the ultimate ratios of triple washed coco coir

HM Digital 1000 ppm NaCl Calibration Solution, 20 ml sachets, box of 20 nutrients-and-supplements The weather-resistant housing is toughFor optimal performance, re calibrate your meters periodically with a 20 ml pack of 1000ppm calibration solution.