Yellow Blossom Lamps are High Pressure Sodium lamps designed to deliver 10% more light than standard HPS lamps. This extremely energy-efficient plant grow lamp provides more energy which is essential for optimized photosynthetic response. Compatible with electronic ballasts. Red output for stem elongation and flowering. All Sunmaster lamps have been enhanced for operation on high frequency digital ballasts. Each electrode in the lamp uses a special blend of Nickel (Ni 65%) and Copper (Cu 30%). With Sunmaster's spectral families, each lamp is tailored to promote optimum development at each plant growth stage. Specifically designed to provide high PAR (Photosynthetic Active Radiation) values, Sunmaster leads the field in product innovation and plant lighting research. Compatible with Electronic Ballasts 10% more light than a standard HPS lamp Red output for stem elongation and flowering Economical Long life, Replace less often Ideal companion for Metal Halide Conversion Lamps Ansi Code: S106 Initial Lumens: 90,000 PAR Watts: 215 Life Hours: 24,000 Universal Position