Powerful, yet space-saving High Output T5 lamps make the Nova Extreme fixture the ultimate lighting source for reef aquariums. Featuring all the light your corals and other reef organisms need to thrive: 460 nm actinic blue lamps and 10,000K ultra daylight lamps. Each lighting source runs on independent circuits so you can customize your day/night cycles. Top off the perfect lighting with a low-energy consuming electronic ballast, a reflector that increases lighting output, cooling fan for safety and efficiency, and you've got yourself one powerful, yet sensible lighting fixture that provides your reef with the best light available...second only to the sun itself.