- iPower 1000 watt MH bulb compatible with electronic and magnetic ballasts, 92,000 Lumens - 6,000K blue & violet spectrum and high PAR (Photosynthetic Active Radiation) to stimulate vegetative growth. Ideal for rapid growth phase of plants. Greatly enhances all-around plant growth to stimulate vegetative growth - Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5,000 hours - Startup time: allow 3-5 mins for full bright. Please wait at least 5 mins after power shut off before striking again - Long bulb life: 12,000 hours. New long lasting life with a high lumen output and low energy consumption. Warranty: 1 year