That is very strange indeed. I know certain chemicals or additives can cause skimmers to go nuts. Maybe it's something like that?Unsure what's causing all the issues with my Nyos. Two weeks ago everything was running well, and then one day it just started overflowing like crazy. No sump water level changes. I had to adjust it from nearly fully closed (raise water level) to now nearly fully open (lower water level.) No clear reason why, but it's operating well again, despite the 180 adjustment needs.
Even if you go with all new dry rock, you're bringing 20+ lbs of live rock from your current system aren't you? Seems to me like you have a nice 'base' of LR to quick-start your new tank no matter how much dry you end up needing.
You make a good point. The rock I have that was previously dry + the couple lbs of aquacultured is definitely full of life. It could seed everything else. Hmmm. I'll have to think on it. Maybe live isn't necessary.
I'm admitedly very nervous of the tank transfer. I've seen so much success lately, I am scared of moving backwards.