I guess Colin responded while I was typing. I’d recommend Furan-2 for anti bacterial med. It’s made by API.Well, I’m one of the few on here that do go for the meds if Freshwater isn’t working or something is spreading. For the record, my first choice is 70% water changes each day for 2 weeks and aquarium salt at one tablespoon per 5 gallons of water. Each day as you change water put back that much of salt. Example, if you remove 50% of water then add back 50% of the aquarium salt. If the fungus is spreading quickly then go ahead and try some API Fungus Cure. I believe Jungle Cure also treats fungus. If the fish continues to decline then we will have to go to antibiotics such as Kanamycin and Furan-2. Keep us posted.
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