[fishoholic]

From personal experience if you want good colours and great growth from your corals go with MH. I would think a 250w MH HQI Hamilton bulb would do nicely. All I know is that our zoos (that we have) and the sps corals (that we had, sold them) would not grow under T5's. The light was so poor for the sps they started to die off, again just our experience. Ended up moving them to the tank with MH and not only did they start coming back but they got lots of new growth. Our lps corals and most softies and our anemone have done great under the T5's. I do find that (personally) I like the look of the MH better, I find it's more of a blue light whereas the t5's seem a little bit more yellow. Although we have had other people over to our house and they like the look of our corals under our T5's better then our MH, so really I find it's more of a personal preference.