So, two days ago, I noticed my NTT with a sunken stomach after having seen it eat before and then it started swimming erradically. I have no idea how it got an internal parasite as all the fish in the tank have been in there for a couple months. I threw it in a hospital tank that already had salt, pima and mela in it but I added some PraziPro. What else can I do? I've lost few polys to this but never anything else.