Betta with fin rot?
Before anyone jumps on my case, my betta is housed in a 5gal, heated, filtered, and medium-heavily planted tank. The tank was fully cycled before I purchased her (yes, the full, several month long process of cycling a tank) and the tank has been set up a little longer than a year.
I clean ~50% of the water weekly, except the one time I let it go for two weeks. In that time she got a small case of fin rot and has been battling it ever since. That was months ago.
I feel like I've tried everything. Clean water, salt, meds. I've tried adding her to a hospital tank (so I don't damage my plants or 2 nerite snails), but she gets so stressed out. I'm back for the weekend from college, and while she had been staying neutral (not getting better or worse) she now looks worse.
I tested the water (liquid test kit), Nitrite and Nitrate at 0ppm, and Ammonia at less than 0.25ppm. The trace Ammonia is from my tap water, but the tank SHOULD be able to handle it, because it's cycled and planted.
What can I do? I feel like I've exhausted my options because nothing has helped. It's either stressed her out, or its stressed my plants/snails without helping her either! I want my Ammonia at 0ppm, but now I'm not sure how to get it there because I'm not sure why it's there anyway