Here is a example of what *can* be done with T5's.
http://www.nano-reef.com/forums/show...threadid=24522
I was going to go for all T5 lighting, but I didn't want to have to replace 4-5 lights at a time, that is why I went with 1 MH bulb... even if you stagger the replacement, you are constantly replacing bulbs at $30-40 a pop...
just a thought.
Walter