well never tried the double end bulbs but my choice would be 250 watt 10k xm. thats what i run and really like the look. mine are mogul based by the way. also supplemented with 4 55watt 03 actinics.
dave.
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120 gal/in wall tank/starboard substraight/2 250 watt 10k xm metal halides/ 4 55watt 03 actinics/150lbs lr/scwd on return/scwd on a closed loop/aquaclear aquatics 200 pro wetdry w/skimmer.
ask all the questions you have if we cant answer it we'll make up some thing. remember patience is the key to a kick ass reef.
dave.
