Finrot is bacterial infection, not fungal infection. My recommendation for finrot cases is do daily water changes for a few days. If it seems to persist or worsen, then that's the time antibiotics can be administered.
Hi Lupin. I have a question for you. In the Fish store pet peeves thread, you were talking about fungal infections being rare. Would most finrot be bacterial then? I usually use JFE for fin rot but if the finrot is bacterial then I'll treat with meds for bacterial infections. Thanks.