Hello everyone! This is my first post here and I just registered today, because I desperately need help with my Betta fish. He is a double-tail halfmoon Betta and is having some trouble overcoming fin rot.
The problem started around a month ago and I've tried multiple solutions. I first tried aquarium salt, which worked for a little while but then stopped working after I ended the treatment. I tried the salt again in a slightly higher dosage and it didn't work at all, so I installed an air pump and an air stone in my tank to start medication. I've already done two doses of Maracyn Two, which I thought would work like a charm, but I don't think it's helped at all. Lately I noticed that the heater in my tank was fluctuating and just replaced it yesterday, which obviously was causing increased stress on my fish, which could have been why he wasn't getting better.
My tank is a 5.5 gallon tank with less than 5ppm of nitrates and no nitrites/chlorine. I tested for ammonia about a week ago and the levels were close to nothing. The temperature is stable at around 80 degrees F right now. The pH is also slightly basic but around the normal range. The tank has been set up for about two months now, and I have two live plants to help with the cycling process.
The last time I did a water change was about a week ago after I finished the first treatment of Maracyn Two, and I'm doing another one today after the end of this treatment. My fish's diet has been mostly the same, but I've introduced frozen brine shrimp along with the normal pellets he eats and he seems to be loving it.
Please help me! I'm not sure if the problem is that he was stressed out about the temperature or something to do with the water quality. I haven't tested for ammonia in about a week so I can do that again if need be. I also don't know if the problem is fungal or bacterial, which may be why he's not getting better. I will attach a picture here if I can, I really want him to get better because he's my best friend
Here is the image link if it doesn't work below: https://imgur.com/a/qDjP9Yl