Plants grow lean and green when gardeners raise them under a 600-watt HiLUX GRO MH Conversion Lamp. Emitting 47,000 initial lumens with a 12,000-hour life rating, this lamp lets growers promote healthy vegetative growth from a 600-watt HPS ballast. Quality HID conversion lamp operates in the horizontal or base-up position and includes a one-year manufacturer?s warranty.