I am currently running 12 39 watt t5's in individual reflectors and really like them. My anemones have definetly gotten bigger and have not moved since i put them on the tank. You could easlit land a plan in my living room. Soft corals do great and i am just getting into sps and they have all held there colour. They are much more cooler temperature wise as compared to metal halides. I have mine about 6-7 inches of the tank in an eclosed hood and the temp stays pretty stable a 80. We are going to halides now not because of the way the work but because the wife likes the "shimmer"
But i have on there 4 super whites,4 aqua blue specials and 4 blue plus. And that gives off the right amount of blue as i like the blue look but not blueberry look. And with that i have not had to add the actinics.
My opinion cheap to do it yourself,cheap on the power bill and heat in the tank and they provide great growth.
I have attached a link of a tank that is only under t5's
http://www.reefkeeping.com/issues/20...totm/index.php
Craig