Go extreme with your aquarium's lighting with Nova Extreme Pro T5 HO systems. Each fixture includes individually contoured reflectors to ensure the maximum amount of lighting intensity reaches your tank. The sleek, low-profile design actually dissipates heat away from your aquarium. Cool running performance ballasts and internal fans keep things cool and efficient, while independent lighting controls are included to operate the full complement of T5 HO 10,000K & 460nm bulbs in a day/night cycle. Each system also includes a splash lends and docking mounts. The 72 in. model includes 6-10,000K T5 HO Slimpaq bulbs and 6-T5 HO Slimpaq actinic 460nm bulbs. Slimpaq bulbs offer 50% more output to ordinary lighting systems and a longer lifespan.