50G would be 48 " wide......so 250w (which should spread out 24" each way) would be minimum....actinic...I would skip...(depending on deep water corals or shallow water) depends on what you are keeping
<a href=showthread.php?s=&postid=6760184#post6760184 target=_blank>Originally posted</a> by AllenFord_SC Go with 2 175W bulbs. MH only spreads 24" x 24" total.
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