Data and photo's from JB NY's Post on Reef Central "250 watt SE MH lamps compared "
DATA is from the PFO Standard Ballast,
see http://reefcentral.com/forums/showthread.php?s=&threadid=254667 for more info.
Many other ballasts and bulb combinations are tested, and hopefully will continue to be tested.

My only involvment is being bored at work today. - Chris Morris