The corals are illuminated by Solite Lightings 2 sets:
Here is the top view, it has an exhaust fan to cool the lightings
A side vent on each side to provide heat to escape too.
Each set has 4 tubes, and has 2 switches to control 2 lights each. Hence i like it, as i can opt to just switch on the actinics or white light
[Edited on 7-7-2012 by slcw]