Right, don't know why 33 was stuck in my head
I'd second the call for another 2 bulbs in T5.
I had a full T5 setup on my 110 (8 bulb) and ended up swapping out 4 of the bulbs for 2 175 watt MH's. For me, I got decent results with both. I just preferred MH for the shimmer. Plus my tank was in the basement so I had no worries about heat.
Not sure what to tell you about why your corals aren't growing. Your light setup seems ok. Individual reflectors, close to the water... that all seems fine. Two bulbs will give you extra spread from front to back but won't necessarily add more light to corals in the middle for example. If the lamp is functioning correctly then I would guess the problem lies elsewhere.