This California Lightworks CLW-SS-400 SolarStorm 400-watt LED grow light uses LED technology to bring you better coverage and yield in both the veg and bloom stages. This LED grow light features 80 5-watt high quality LED emitters for deep penetration into the canopy and two built-in T8 fluorescent UVB lights, which are turned on the last 10 days of the flowering stage, to boost crop potency. The LED grow light features a switchable spectrum control, which allows you to turn the UVB on and off, and even switch between veg and bloom states! In veg mode, it emits high levels of blue and deep blue balanced with red that delivers massive growth without stretching. In bloom mode, it emits intense levels of red and deep red balanced with blue to enhance crop quality. With 80,000 life hours and a 3-year warranty, trust the SolarStorm to deliver bigger, better crops.