Well I finally have some good news to report!
The last week and a half or so I've been having problems with my Nano-Remora skimmer.
It just wasn't skimming, looked like very little foam production.
I had already cleaned it recently, but it didn't seem to make any difference.
With everything going on in the tank, I decided to try one last intensive cleaning.
Took it off the tank, emptied out water, cleaned MJ900, stuck a flex brush up the PVC connection from PH to skimmer body, removed lil white screw and did exploratory cleaning w/flex brush and Q-tips.
Had an interesting moment when I turned it back on and it spewed a jet of water straight up in the air!
Forgot to put lil white screw back in.

Remedied that and when I got it going again it started producing the most foam I think I've ever seen out of it. It's honestly producing 4-5x the amount of foam it was before.
BOY was I relieved, I was honestly starting to wonder if either the skimmer or the MJ900 was defective!
Tank residents are alrdy looking happier, including some of the annoyed Zoas.
I still have a couple frags I need to Furan2 dip, but the outlook is greatly improved.
On a different but interesting note (at least to me), my 6 yo was playing on the floor by me while I was cleaning the skimmer. He was putting coins in a cup and making a wish with each one he put in.
He started out with the kind of wishes you'd expect from a 6 yo-- he wanted $10,000 to spend on toys, wanted 10, 000 Bakugan (don't ask, you either know or you don't), wanted to have lots of candy, etc.
But then he started wishing that his brother and I were both 6 yo so we could play with him like he does (I was touched), wishing I never got headaches (I get migraines), wishing that all the people on earth never had to get sick.
I was impressed cause most 6yo's are much too self-centered to even think of stuff like that. When you're 6, you're universe pretty much centers around you and what you want.
I love it that he was thinking outside of that.