The InterLux Super 400W HPS Grow Lamp is a high-pressure sodium light designed to deliver powerful illumination for indoor and hydroponic plant growth. Operating within the red-orange spectrum, it supports the flowering and fruiting stages by enhancing photosynthesis and promoting dense, healthy blooms. The lamp works by producing consistent, high-intensity light that reaches deep int... https://www.hydroponicstown.com/790400-e-interlux-super-400w-hps-grow-lamp