Power Plant HIT/HBU/LU Metal Halide Lamp - 600 watt. Power Plant Metal Halide lamps promote optimum vegetative growth and flowering. Provides a richer more nutritious light Compatible with standard HPS ballasts and ignitor systems. Lamps can simply be changed to maximise growth protential. We recommend that lamps are replaced every 12 to 14 months, after 14 months there is an appreciable drop in the lumen output leading to a reduction in crop yield 600w hps = 51,000 lumens
