Hortilux Metal Halide (MH) Lamp, 1000W, BT56 Large, UniversalHORTILUX Metal Halide provides optimum spectral energy required for vegetative growth. Our basic metal halide series provides high initial and maintained lumen output. These lamps are 100% lead free. Extend the growing season to 365 days a year with EYE HORTILUX grow lamps. Choose EYE HORTILUX lamps to raise your lighting system to a new level of performance and optimize spectral energy levels to promote vigorous plant growth.