The Spacelight EX is the next generation family of lighting products from Aqua Medic, featuring Blueline E-Ballasts. They are packed with all the best attributes of the renowned Spacelight series including the finest German bulb holders, superior reflectors, and aluminum housings in a fine powder coat finish. Features include all external ballasts. Even the T5 ballasts are externally cord mounted! All HQI lamps are powered by Blueline E-ballasts (included). Includes choice of UVL T5 HO Lamps and Blueline, XM, or Phoenix HQI lamps.