what size tank is it ? how long has it been up?
you generally have low light corals, which will be sustained by that light, but it seems to me that the bulbs are not reflected. meaning, there is not a mirror-like piece of aluminum(semi-circular or folded around half of the bulb) that bounces radiating light back down. With T-5s, this will increase their PAR (photosynthetically available light) by about 300%, making them the wisest and most powerful choice unless you have a tank that is over 30" H, in which case you really need 250 w - 400 w Metal halides.
so being that they are not individually reflected, and there are only two bulbs, its really a small amount of light. i would suggest at looking into adjusting or replacing this light with a more appropriate T-5 set up.
one example of light acclimating would be placing three sheets of windows screening on top of the tank, and removing one sheet every 48 hours or so.