Sorry for dragging up an old thread, but I was wondering how Ghost is doing now. Did the infection clear up?
I also wanted to suggest some slight alterations to your tank set up. Good job lowering the temperature and removing the snails and guppies! Your tank looks very bright and open in the photo you posted. ACFs actually prefer a much darker, secure environment. I think you have live plants, so while you probably need to keep your light on, I would recommend adding some more hiding places. ACFs really like little aquarium decor caves/branches that offer shaded hideaways. I know that my frogs would stress without all their hideouts. You can even use a clay pot (turned on its side).
It would also be a good idea to add a background sticker/decal to the tank for added security. My frogs always seem to feel safer at the back of the tank for this reason, less exposure.

Cheers!