In my closet; my 400 watt CMH bulb ran cooler than my 400 watt Hortilux HPS bulb.

I don't know what you can do with this information?..but, ...there it is....:thumbsup:
Dutch Pimp Reviewed by Dutch Pimp on . Any temp difference MH vs. HPS ? I'm just curious; is there is a difference in the amount of heat generated by a Metal Halide bulb and a High Pressure Sodium bulb assuming both are of the same wattage? Rating: 5