how much MH lighting is enough?

1 250 mh with atinics would be ok 4 -6 watts per gallon i usually go with IMO..

Regards.........
 
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
 
I just duplicated this thread a few minutes ago. Stupid me.

So ONE 250watt Hamilton Reefstar or Reefsun unit isn't enough for my 55 gallon tank?
 
<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.

Even with a double ended hqi system?
 
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