The Plantmax PX-MPS1000/10K is designed to work with high frequency electronic ballasts. This grow light allows growers to mix and match and create perfect blends of light to meet the specific needs of plants, from new seedlings, to mature plants ready for harvest. The PX-MPS1000/10K pulse start metal halide grow light operates at 1000 watts with a 10000 Kelvin color temperature. Use with electronic ballast systems to encourage long lamp life with minimum color shift or loss.