How high did you raise teh temp?

I notice another one has damage to the face (right behind the eye) and a swollen cloudy eye.

Please help me.

Hi all.

I just noticed that my zebra pleco has a red sore about 5 millimeters in diameter on its body. What is a safe way to treat the fish in the tank? Can I use melafix? Should I be worried about something else? I want to help this fish and protect the others in the tank.

Thanks,

BAiley