Encourage fruiting and flowering with a sodium lamp from one of the best-known names in the world! This 600-watt G.E. PhotoSynthesis Light High Pressure Sodium Lamp emits over 90,000 initial lumens at a color temperature of 2,100 kelvins and boasts a 28,500-hour life rating. It also features General Electric’s High Xenon-Fill technology, which provides a high level of photosynthesis-stimulating light and radiation. This lamp is intended for use in sodium systems only.