ViaVolt 400-Watt MH (Metal Halide) Grow lights have an effective spectral distribution for stimulating vegetative plant growth. Metal Halide Grow Lights emit light most heavily in the blue wavelengths of the electromagnetic spectrum. Metal Halide bulbs stimulate vegetative growth in plants more efficiently than other light sources designed for growing plants. 32,000 Lumens, 7,200K, ED37 Lamp.

ViaVolt 400-Watt MH (Metal Halide) Grow lights have an effective spectral distribution for stimulating vegetative plant growth. Metal Halide Grow Lights emit light most heavily in the blue wavelengths of the electromagnetic spectrum. Metal Halide bulbs stimulate vegetative growth in plants more efficiently than other light sources designed for growing plants. 32,000 Lumens, 7,200K, ED37 Lamp.