Increase yields with the Plantmax PX-MPS1000/7K. This grow light delivers 1000 watts of high output light at 7000 Kelvin, improving foliar growth and leaf color. Mix and match to create perfect blends of light to meet the specific needs of plants by pairing with HPS grow lamps in the red spectrum. The PX-MPS1000/7K pulse start metal halide grow light . Intended for use with electronic ballast systems Open or closed fixture compatible Pulse start