Just a note on this for anyone that has a similar problem as jcom, with Cyanobacteria/Red slime algae (also comes in blue-green, green, maroon and black). Cyano grows much better when the sand is vacumed frequently. The removal of the organic matter and critters from the sand, which may make it look white and attractive to most people, is the cause of a range of problems, such as unwanted algae growth, high Nitrates, coral problems and lack of coral growth. The answer is counter-intuitive.

Thanks Mark, my hope is that with my new fuge and scrubber, I will be able to feed more and get a few more fish.  I think tha part of the youthful look of the tank is because it had a ruthless cyano outbreak that the maintenance crew couldn't kick no matter what they tried (ozone, increased flow, etc).  It lasted almost a year and I was pretty down on the whole thing for awhile.  Finally, they ended up  basically stripping the tank and replacing all of the LR.  It was still coming back after that swap out so I finally just left the halides off for almost a month and that seemed to do the trick.  Since then it's just been on cruise control in 2nd gear  Hopefully I've helped it turn the corner with the latest TLC.