Made in the U.S the Reef Brite Ultra T5 offers proven performance and reliability. The Ultra T5 features a proprietary dual parabolic reflector that allows the maximum amount of light to be transmitted from the lamps for greater penetration. Energy efficient digital electronic ballast saves energy while operating your T5HO lamps at peak performance. The Ultra T5 produces more light, while maintaining ideal lamp temperatures. Add additional supplemental LED bars (sold separately).