I am in the active development of building my own LED lights for my aquariums. My first led controller protype failed but I've hit the drawing board to change my building process into a printed circuit board instead of a rats nest of wires.
For now I'm running power compacts on my 90g and 10g. By end of summer, my goal is to have converted to LEDs. If you hang tight, i will have something to share in a couple of weeks.