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 and a 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.