sent up a qt and try maroxy. i did concentrated maroxy dip (5ml to 2 cups sw), but you have repeat it several times before it goes away. i think it would probably work better just to set up a qt and have them setting in it the whole time.
the problem is IDing the idiological agent in the first place. if its bacterial, it would be relatively easy to take care of, but this seems like this is a true fungus. in this case, furan 2 dips won't/don't work because the active ingredients are bactericidal/bacteristatic, not anti-fungal in nature. you have to use an antifungal treatment. i'm actually in the middle of an experiment using clotrimazole, the active ingredient in athlete's foot cream, and trying to get some sporanox, a prescription antifungal.