EYE HORTILUX 1000W Super HPS spectrum provides 17% more overall spectral energy, and 25% more violet, blue and green spectrum than standard HPS lamps. This results in better overall plant growth and yield. Traditionally High Pressure Sodium lamps have been used for flowering and fruit production. HORTILUX HPS lamps were designed with enough violet, blue, and green spectrum to be used as a standalone light source throughout all phases of plant production.