Hortilux Eye Blue metal halide, 250watt. I find them all over for about $124.99 on average, but $69.90??
http://www.plantlightinghydroponics...pectrum-universal-metal-halide-bulb-p-92.html
http://www.plantlightinghydroponics...pectrum-universal-metal-halide-bulb-p-92.html