I bought a new betta 3 or 4 weeks ago, and since the night I brought him home he's had mild finrot. The tips of his fins are sort of brown, and slightly ragged. I started treating him with salt baths and very regular water changes immediately, but there was no change. I decided to try Jungle Fungus Eliminator and have gone through 2 4 day treatment cycles and still no change, it's not getting any worse, but it's not getting any better either.
I have another betta whom had a more severe case of finrot when I got him, and is responding very well to JFE, and is already showing signs of regrowth.
Does anyone have any other suggestions as to what I should do?
Is there something I'm missing that could be causing his symptoms?