I don't think I'll pull the rip cord until - and unless - my chain goes away and I STILL have a skimming problem.
Huh? What chain? I think that was "cyano" that got autocorrected by my HP Touchpad. Gotta stop posting with that thing.
Sounds like a wise plan. I really like the way you talk through your plans in Posts.
Thanks! LOL! Do you like twice as much when I double-post?

I REALLY gotta be careful with that Touchpad!
Steve,
I read a thread on this forum that a fellow reefer solve his cyano issue by replacing the spiral pc light on his sump with 5000k led light.
Thanks for the help. But that's not going to do it for me. He had measurable phosphates at 0.2 ppm. If the last post is to be taken at face value, the lamp in his sump was not growing his chaeto fast enough. He replaced the lamp. Chaeto grew, and cyano died due to lack of phosphates. That's not going to happen in my case, because I'm ALREADY doing that by virtue of my ATS. If what appears to work in your referenced thread was going to work for me, I would have never gotten cyano in the first place. On that topic though...
My cyano is both spreading, and diminishing. It's moved to the other large new rock. But it is less aggressive. I had been removing it daily. Now only every 3-4 days. Don't get me wrong... it's still bad. But appears to be improving.
In researching cyano here I came across a fascinating comment by a fellow reefer (wish I could remember who to give them credit). In one of the many long cyano threads here, they posted a very informed sounding post that was pretty much ignored. They basically said that once cyano starts, it's going to continue until you rob it of its carbon source. That it can survive just fine without N & P if it's got a carbon source.
So I've been watching the pH on my tank. It's lower than I'm used to seeing it in my old 29g. The salt mix is the same. Dosing is the same. Its lights are the same. It's even in the same exact location. So why's the pH so low? Simple. It's dead of winter, and the house is sealed up tight as a drum. And the tank is in my family room where 2-4 of us gather every night for 4-5 hours. Our respiration is carbonating the tank, driving down my tank's pH, and possibly providing the cyano an carbon source in the form of dissolved CO2.
Week before last my wife, one of my sons, and I took a three day trip. One son remained. When I returned, I was expecting to see BAD cyano, since I had been removing it daily. Instead I was shocked to see it barely different that when I had left three days previously. And a quick look at my Apex' pH history graphs and it was clear... my pH had clearly risen. Why? Fewer people exhaling in that room for several days. Less carbon, less cyano? Maybe.
And since it's a bacterial problem, having mono-colonies appear to promote cyany. That's why it's "new tank syndrome". So I'm fighting it bacteriologically also. A little over a week ago I started hitting the tank with a couple of drops of ZEObak every other day. I'm trying to help establish a better beneficial bacteria population. Did I mention that it's improving?
Time will tell. Either beneficial bacteria, open windows in the springtime, or just plain old tank maturity will kick in sometime over the next few weeks or months, and hopefully it will become history. Or maybe a combination of all three. I'm not really worried.