Philips MH 1000W U/BT-37
Standard Metal Halide (MH) Lamps
Metal Halide Grow lights have good spectral distribution. MH Grow Lights emit the bluish and green regions of the light spectrum. Metal Halide Grow Systems stimulate plant growth more efficiently than any other grow light source. It is best to use Metal Halide Lamps in addition to or cycled with HPS grow lights.