I don't think my pleco has any disease yet but I was moving some stuff around in my aquarium to make room for a new cave. I didn't see my pleco in one of the caves I was moving and I just looked at him and he has at least one scrape on his head, he's very shy so I couldn't get a really good look. Is there anything I can, or should do or will it heal itself? I feel really bad now, so any help is appreciated.
If you keep up on the water quality then your fish should heal by itself, lots of fish get damaged accidentally and heal fine without lots of different chemicals.