I haven't had a betta that has had some type of bacterial infection yet (a miracle to be sure) after caring for them for 5-6 years. I just got a male that had some white cotton fuzz at the bottom and figured he'd be fine with some new water since none was present on him yet. He's doing great still: eating, swimming, active. He's just got a spot of fuzz on one of his pectoral fins.
I was wondering how well bettafix worked and if it would harm my betta. I didn't have good results with the last betta medicine I used and it nearly killed my old betta. This time I figured I'd ask some opinions first before using it.