QuestCraft HPS 1000W HYDROPONIC GROW LIGHT BULB GROW LAMP High Pressure Sodium BULBS High Pressure Sodium (HPS) - These lamps are red/orange in the spectrum. This type of light promotes flowering, budding, and fruiting in plants. It is ideal for Greenhouses, Commercial growing applications or residential uses. Super HPS grow lamp allows anyone to stretch their growing season to 365 days a year. It provides up to 15% more available energy for plant growth than standard high pressure sodium lamps. The lamp's enhanced spectral energy distribution is designed to grow a wider variety of plants. Increased Violet and Red Lighting Spectrum Engineered to Enhance Natural Plant Growth; Creates a More Correct Balance of Red and Blue/Violet Energy for Increased Photosynthesis Wattage: 10 00 Watts; Base: E39; Initial Lumens: 140 ,000; CRI: 25; Glass Size: ET25; Grade: Premium Bulb