i have a 24 in 4 bulb t5 fixture i currently run for 10 hrs 96watts total ona 29 biocube jus recently bought the fixture so dont really know if i should tone down or go longer trial and error in this hobby
I have an MH/T5 combo. I kind of think on my Aquatinics setup, that the T5 is really for accent and not really for the corals. In the summer I run my larger tank with a shorter period to cut down on heat.
So T5's run 10 hours, so I can see the tank for a long period and on my MH, which really is the main lighting, I run that in the summer for 6 hours during the summer.