Just for ideas, here is my 19 month old system...
http://reefcentral.com/gallery/data/500/37052side2.jpg
http://reefcentral.com/gallery/data/500/37052tank-med.jpg
The purple on the rocks is coralline, and it is only under 120 watts of NO PC. I just upgraded to 260 watts PC, though, so I look...