We left the heat up for longer than planned due to a trip. When we got back (Jan 1) one of the cory's had died, although he'd been looking a bit weak before we left.
Ich seems to be gone, although I though Isaw one white spot on a neons tail initially, when I checked back a bit later it was gone, and all the fish seem clear. Fingers crossed that the ich is gone.
So to summarize, several weeks at 85deg with 1t salt per gallon (tapered off after 2 weeks with water changes) seems to have done the trick. 1 fish lost, plants seem ok.
Naturally, now we have a new issue, which was a giant carpet of blue green algae that formed while we were gone for 6 days. Want to get that fixed before I get new fish, but next up is more cory habrosus and hopefully some rams.
Thanks for reading, hope the info here helps someone in the future.