The G8-600 Full Spectrum LED Veg/Flower grow light by G8LED is for the professional indoor grower andprovides intense coverage for 6-10 mature plants from seedling through harvest. This G8LED has the growing power of 800-1000 Watts of a high-pressure sodium (HPS) or metal halide (MH) bulb, while only using 380Watts of power. This is a full spectrum grow light for both the vegetative growth and flowering cycles and provides intense coverage for 20 square feet (5feet x 4feet) (1,9sq meter-152cm x 122cm) of grow space. This light penetrates 5feet (152cm) past the plant canopy and saves 50-60% on your electrical consumption. The electrical savings will pay for the light within the first year of usage.