I posted a message in fish emergency but didn't get one reply! So here I am.
One of my albino cories had what I thought was an injury to a dorsal fin. I starting using some melafix and was hoping all would be ok. I noticed a few days later that the other dorsal fin is also not looking good and I saw some cotton wool growth. I took him out of the the tank and the cotton wool came off. I didn't know what to do with him in regard to placement, and without a reply in the emergency forum I had to put him back into my tank. I continued with the melafix, added a tiny bit of salt (yes they are scaleless, hence the tiny
bit of salt), and raised the temp ever so slightly just in case (wanting to ward off anything else that could rear it's ugly head right now).
I am overstocked, but my water parameters are always perfect (A=0 NI=0 NA<5) and maintenance is never, ever missed. I was going to give my pleco to a friend soon, but now that is on hold until I'm sure there are no issues with my fish.
The good news is this morning, Mr. Cory isn't looking worse. I don't see any more cottony growth, and his behavior seems about normal otherwise, maybe just not buzzing around as much. No clamped fins and he is in a different spot than he was last night. My other cory is unaffected by this as of now.
So is the consensus here that I did the right thing, and if I don't have a hospital tank what else could I have done?