Hi! My betta fish for the last 3 weeks has been eating his fin. Now he has gotten fin rot. I have added aquarium salt to the tank to help cure it but it has not been working.
My water quality is good, no ammonia, no nitrite and very little nitrate. He lives in a 2.5 gallon tank with a heater and live plants.
Unfortunately, today I came back from school and his top fin (dorsal) is almost completely gone. Both his caudal and anal fin looks like they have been through a shredder. I dont know what to do!