... timer Ballast Specs Power Output: Dimmable 50%, 75%, 100%Lumens: Up to 40% more than magnetic ballasts for improved yieldsLamp Compatibility: Metal ... replacement.High Pressure Sodium ( HPS ) Bulb Specs400w, 600w, 1000w = 53,000, 86,000 , 140,000 Lumens RespectivelyCompatibility: Strikes both magnetic and digital ... we may send you a replacement hydroponic lighting hps/mh light bulb on hot!