Hi-LuxGro™ MH 1000 Watt DE 5500°K delivers color temperature similar to daylight. High blue light ratio and full spectrum output for healthy plant growth and robustness. Superior µmol output within the PAR spectral range (Photosynthesis Active Radiation). The 1000W DE Metal Halide lamp holds the highest industry quality ISO 9001 standards with best in its class reliability over lifetime. Easy lamp change. Special lamp design optimized for usage in open luminaires.