right here, DP :
400 Watt Metal Halide Bulbs

they're in Texas, I've bought quite a few things from them, very good outfit ... when I had a broken sodium bulb arrive, they immediately sent a replacement, and a UPS Pickup Tag, for the broken one ... :thumbsup:
the image reaper Reviewed by the image reaper on . 400-watt MH/hps Conversion lamp question ... I just bought a pair of these, for $35 apiece ... can anyone tell me if they run at a hotter temperature than my regular 400 HPS lamps ? ... 400 Watt Metal Halide - Operates in LU400 High Pressure Sodium Fixtures Only - EYE #51837 Light Bulb Rating: 5