The benefits of Metal Halide and High Pressure Sodium together: vigorous growth, accelerated development and hearty flowering! The lamp’s unmatched energy spectrum provides the optimum light for plant growth through the entire growth cycle. Exclusive Iwasaki chemistry and global lighting technology combines to deliver 110,000 initial lumens. The LU1000MH/HTL/EN lamp is in a E25 jacket, which will conveniently fit in all 1000-Watt fixtures. This lamp operates on standard ANSI S52 ballast, for use on 1000-Watt High Pressure Sodium systems.