Ushio HiLUX GRO AMH 400W Opti Blue

400, 600 and 1000 watt SUPER high output MH with maximized output in both blue and red spectral range. Outperforms standard MH bulbs. Conversion bulb to operate on ANSI coded HPS ballast. Optimized for maximized branching and vegetative growth and added red spectrum for flowering efficiency.