Whats best to cure injured fins/scales?

I've heard of several products that help heal damaged fish due to aggression. I was wondering what everyone uses. Is there something that I could treat my whole tank with to keep my fish healthy. Its a 75G. Or do I just need to catch the injured fish and treat in a hospital tank. None of my fish are seriously hurt just some of them have a few nips here and there out of their fins from just being Cichlid's. They seem to be getting better on their own... I guess I'm just looking for something to help them along. Does such a thing exist?