Hey greentree,welcome to the sps roller coaster.
Eve and the coral she resides in are beautiful.
You have a really nice set up and some good looking corals.
I wonder why you are trying to push parameters. Why not aim for natural seawater parameters?
You can't go wrong with what Mother Nature intended,imo.
I think if you raised your lights a bit, you'd get better spread and less bleaching..
If I were you, I'd add another small fish or two to raise nutrients a bit. And some more snails. As nutrients go up a bit, so will algea growth. It would be good to have the snails in there and on the ready.
More fish, more algea and more snails will translate into some good nutrients for the corals.
And that foster you mentioned makes good sense. Easier to maintain stable levels and keeps you from getting so crazy about testing and dosing manually. Once you have your doser dialed in relatively well, you can rest less frequently and make small adjustments to dosing.
Looking forward to your progress!