EYE HORTILUX® Metal Halide e-Start lamps are designed for use with electronic/digital ballasts. The starting and operating characteristics of electronic/digital ballasts are different than traditional magnetic core and coil ballasts. These differences allow EYE to optimize lamp performance over life to improve results in the indoor garden. EYE HORTILUX e-Start lamps provide the spectral energy required for vegetative growth. E-Start outperforms most grow lamps because of high initial light intensity and consistent output of the exclusive EYE HORTILUX spectrum.This 1,000-watt lamp is rated for 80,000 initial lumens and requires a horizontal burn position. One-year warranty.