Ok, yesterday I came home from vacation when I looked in my tank and saw a grizzly seen, my jack dempsey literally ripping my convict cichlid to pieces! It was a real suprise to me bacause when I left, there really was no interaction between them. I managed to take the convict out and he is in a seperate tank right now, but I think its too late for him. He is mostly descaled, part of his spine is exposed, and he has parts missing. I want to euthanize him too stop his suffering. I wanted to use clove oil, but I can't seem to find it anywhere. Is there any other method? My friend suggested putting a pain killer like tylenol or advil into the water. Would that be ok?