The Hydro Crunch 315-Watt ceramic discharge metal halide grow light system delivers a light spectrum that's much closer to natural sunlight than typical high intensity discharge (HID) systems. A higher temperature creating light much closer to the suns. Being able to operate more efficiently at higher temperatures means a boost in performance. Coverage area is 4 ft. x 4 ft., that means bigger harvest and less cost. The lamp is optimized for the bloom phase with enhanced reds, but because it's full-spectrum, it will produce the goods in both vegetable and flower expect to see increased growth rates, tighter internodes, an improvement in overall vigor and an increase in final weight.