SunMaster Cool Deluxe Grow Lamps emit light from 5000? to 6500? 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) Watts - the most objective measurement of total light energy available for photosynthesis. 30,000 lumens.