Hi!names gabi...I'm somewhat new here, my baby Spot I've had for about 4-5 months now and suddenly has been having a bad case of fin rot. Which is partially my fault, since I wasn't able to clean the tank in 3 weeks. BUT I was able to clean it 100%water change. Cleaned the equipment and accessories, and cleaned the gravel. Now I'm using a medicine called melafix. Hes on his third day using it and it seems hes getting worse... he doesn't seem to want to eat, I give him pellets but on weekends and such I give him dried worms. He has a heater and the water temp stays between 75-80°. If anyone can help me thatd be great. I went to Petco too and even they didnt know what to do....I would post a picture but he seems to be hiding more often and doesn't come out.. as well he seems to have a bit of trouble swimming due to ththe filters current...I need as much advice I possibly can. I don't want him to die . Please and thank you if you do respond.