Okay, I finally broke down and decided to treat the cyano. I tried a few days of cutting the lights way back, have cut back to feeding every other day for a few weeks, aggressive water changes with manual removal of the cyano, and changed the media in my phosphate reactor. The cyano is better, but it's still persistently there and has covered one of my favorite zoa colonies, has messed with the bubble coral and acan and they don't look so hot, and it's on my birdsnest. Enough is enough. My LFS had Chemiclean (I would imagine all the products that treat cyano are about the same thing). The instructions said to turn off the protein skimmer and the prosphate reactor, so I did that. I mixed the required amount with some RO water and dumped it in the tank. Meanwhile, I decided it was the perfect time to give the skimmer a good cleaning out since it had been about 6 months. I may as well make good use of the 48 hours it has to be turned off, so it's running in a bucket in the kitchen in some water/vinegar and looks much better already! After 12 hours, the cyano has all but disappeared. Now this may be a "band-aid" fix, but I feel if I can get a handle on it, the other things will keep it from coming back (phosphate reactor, cutting back feeding, etc.). I have to do a 20% water change after 48 hours, then start the skimmer and phosphate reactor back. Will see how it goes!