Cool Deluxe Grow Lamps emit light from 5000º to 6500º Kelvin, imitating the natural look of daylight. They are an ideal light source for the seedling and vegetative stages of plant growth, while still emitting a wide spectral distribution. SUNMASTER Cool Deluxe lamps surpass many other HID sources in PAR (Photosynthetically Active Radiation - the measure of total light energy available for photosynthesis) watts, promoting high levels of photosynthesis without compromise. Produces 80,000 Lumens, 320 PAR watts.