The Sunmaster 315W is a CMH growlight that promotes flowering, seedling, and vegetative plants. The bulb delivers bluish wavelengths, and it delivers efficiency equivalent to a 1000 HPS lamp. The sunmaster is compatible with all kinds of e-ballasts and touted as the best choice for pairing to a 315W grow light system.
This Sunmaster bulb is the main ingredient in producing the right spectrum of light . Your plants will love it and you will love the results . Runs cooler than most lights on the market . Including LED lights .Output of a 600 watt bulb,and only consumes 315 watts .