The Black Dog LED PhytoMAX-2 400W LED Grow Light features a whopping 420 actual WATTS and 641uMol/s total PHOTON FLUX. With it’s state of the art Patent Pending PhytoMAX02 it is super compact as well as POWERFUL. This Bad Boy outperforms 600w HPS Grow Bulbs. The PhytoMAX-2 delivers the most powerful TRUE FULL SPECTRUM (365-750nm, UV to NIR) that is beyond reliable. This is one of the most powerful and reliable led grow lights for growing plants indoors. Inside the visually appealing casing is housed with nothing but the highest quality, latest revolutionary technology, top-choice LED’s to deliver Black Dog LED Grow Light’s Proprietary Full-cycle Phyto-Genesis Spectrum® evenly over the entire grow footprint, with un touched PAR levels, canopy penetration and highest yields.