I noticed my betta for sure had fin rot a week and a half ago. I had suspected he may have had fin rot a couple weeks before that but figured I was being paranoid. My betta fish is in an aquarium with the following specs:
5 gallon
50W heater that is preset (usually I find it's around 78 degrees)
sponge filter
water parameters
ammonia = 0ppm
nitrites = 0ppm
nitrates = 5-10 ppm depending on when I decide to do a water change
no tank mates
Got him from PetSmart (I know, bad, but I saw him while I was picking up some supplies and fell in love)
I have had him for almost a year and he just got fin rot. However, I have been noticing he has been having seizures every so often where his head thrashes for a second and then he quickly swims to the other side of the tank. I thought I had treated it with the med trio but when I was watching him while treating him for fin rot I noticed he is still having seizures.
I tested the water thinking that I was just slacking on water changes too much, but the water parameters seemed fine to me. I gave him a week of maracyn treatment and the fin rot seemed to continue to progress. I don't have a picture from today but the top part of his caudal fin is starting to look like it is dying off. Does anyone have any ideas on how to treat him while he is in a planted tank? I also don't have a quarantine tank I can put him in... The best other option is put him in my water change bucket if I need to have a quarantine tank, but I don't have a spare filter or heater. I am also kind of tight on money right now so I am not sure how much I can spend on his treatment. Thanks in advance for the help!