My little butterfly halfmoon Apollo is no longer a butterfly! I noticed several days ago the start of fin rot. :( I skipped out on a partial water change because life got obnoxiously busy. He is my only one left in a smaller tank. 2.5gallon and it's unheated. I was getting ready to move him over into his side of the split 10 gallon when I noticed. He now has some torn spots and the white at the end of his fins is gone and was a darker color. It didn't look like fin rot, but I decided 100% water changes with some salt shall do. I did 1 teaspoon for 2.5 gallons. It went away. Now he has popeye but only in one eye.
I read there are many causes behind popeye. I'm thinking that heat fluctuations or trauma is possible. He only has a silk plant and floating log but he wedges himself between the log and wall. So I am leaning toward trauma.
What is the best way to deal with the popeye? How long will it take for me to see improvement? Should I not add salt anymore?
His fins are as normal as they are going to get. How long does it usually take for them to regenerate? He had a little split that I want to heal before placing him in his new tank.
I placed a heater in today and I am doing 100% changes daily with stress coat and salt.