T5 and LED are pretty comparable in total price to run over 5 years (copied from an old post: for a 120g tank 2 xr30w would cost 1300. A 48'' ATI sunpower is 650, and 5 years of bulbs is about 600). Electrical running costs are also pretty similar for similar coverage and par.
But most importantly, T5's are just really good at growing coral. But I don't think I would ever run T5 by themselves- I just don't like the "flat" look it gives the tank. Go for a hybrid. I run T5/halide, but would definitely go t5/led if I lived someplace warmer where the halide heat was an issue. Bulb prices for the halides are not really an issue, as they only need to be replace every 2 years, and I really like the look, but they spit out serious heat.
But most importantly, T5's are just really good at growing coral. But I don't think I would ever run T5 by themselves- I just don't like the "flat" look it gives the tank. Go for a hybrid. I run T5/halide, but would definitely go t5/led if I lived someplace warmer where the halide heat was an issue. Bulb prices for the halides are not really an issue, as they only need to be replace every 2 years, and I really like the look, but they spit out serious heat.



