BLUE BALANCE is our 14,000 Kelvin lamp series and it is the most popular selling lamp among aquarium hobbyists at large. The balance of useful light/high PAR for coral growth plus pleasing aesthetic color and strong blue weight in the spectrum have made this lamp the mainstream choice for reefkeepers. For achieving the best balance of growth and color, and to keep the widest range of species under a single lamp color, our Blue Balance is a best bet!