Ushio Horturion HPS 1000W DE EL 2.2 (12 pack)Replacement HPS 1000W bulbs with 2100 mol s light output Optimize photosynthesis efficiency with improved grow lighting specifically designed for professional greenhouses and turf. Get a high red light ratio and blue output for healthy plant growth and robustness, along with superior mol output within the Photosynthesis Active Radiation (PAR) spectral range. Expect high PAR maintenance over the lifetime and easy lamp changes with compatibility for