I suggest something like this...
http://www.jlaquatics.com/product/sl...C+6+x+39W.html
It is a t5 fixture and comes in either 4 or 6 bulbs. I would say either would be more than enough for most anything you plan on keeping. You also have many options on which bulbs you want to run. You also wont have to worry about heat like you would with mh.