OK, well Gomer has been placed in a separate hospital tank. Now, this tank isn't very big, and has no filtration. At first I thought his skin was shedding, but it could be those cottony strands I read about. In fact, it probably is a fungal infection. I put some Maroxy in the main tank after he was removed (2 doses total so far). I used some of that water in the hospital tank.

Gomer seems pretty active, but his appetite doesn't seem to be there. He is definitely unhappy with the hospital tank. I added a building and a pair of plants to help him enjoy it, but he wants out. The other frogs in the main tank are happy and healthy, so I don't want to risk them getting sick... With salt and Maroxy in the water, is it safe for him to be in the primary tank? Or should I still keep him on his own? He looks sick, he just isn't acting sick.

If I keep him in the hospital tank, how often should I change the water (keeping in mind there is no filter)? I did a 30% water change just now.