So I am going to upgrade my lighting in my 90 gallon reef tank. I currently have compact flouresent lighting. I am either going to go with new t5ho or metal halides. I'm stocking lps and softies (accans, maze brains, zoa's, shrooms & probly a frogspawn or torch and hammer) anyway I like the priceing of t5's but how come all the t5 fictures use less wattage than the halides, yet have the same lux reading? is this correct? anyone stocking a lps tank with t5's? and if the t5ho have the same lighting output as the halides with less wattage and power usage, anyone not seea benifet to these?