I've got a 96W powerquad over the 10G in my office. I only have a couple zoos and a candy cane in there now. It's sort of a holding tank while my 40B is cycling. At home I have a 10G with a 70W halide over it and I've got SPS in there. They seem to be doing fine. You could always run the 96W bulb for a while and if things don't seem to be doing good, upgrade down the road. I had a 250W halide over a 26G bow and it was probably overkill, but looked cool.