The LumiGrow ES from LumiGrow Inc. features LED emitters that cast a precise spectral range within 400-700 nanometers. It also features true deep red LEDs that match peak photosynthesis along with double the photosynthetically active radiation of other solid-state horticultural lights. LumiGrow lights use 60 percent less energy than 600-watt high pressure sodium lights. The cool-running lights eliminate the need for ballasts, reflectors, fans or other cooling systems. Independently adjustable red and blue knobs enable growers to fine-tune the lighting.