Last week, I noticed that my female swordtail had some sort of white growth of her fins, tail, and body. It looks cotton-like and is formed in small patches, so I'm guessing it's a fungus. I recently noticed my black balloon molly with that same probelm. It's above his left eye and I fearing that I might lose both of these fish if I don't treat it.
The two fish are in a hospital tank with an air pump and a heater. I started treating them with Maracyn-Two in the hospital tank. Is there any any kind of medication that treats fungus? Any advice?
this link was from the other day and sounds the same problem. If the link doesn't work, this post is titled "Newbie Problem" here in the "Fish Emergency" section. Should help.