i kept a crocea clam, the most light dependent of the clam family in my 120 for about 6 months under pc's and it did well enough but i had 520 watts of pc lighting. just something to think about. good luck.
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.
