OK....If I may suggest that you get a different type of bulb.....
ATI make good bulbs.....I think you need more intense lighting and the coralife kinda stink.
I am no light expert BUT....when I switched my T5 bulbs to these WOOHOO what a difference
Look into ATI Blue Plus, ATI blue specials, AquaScience Special 15000
BUT...ask Nikesb, or Spanko, for a better rotation.......