My pickerel got beaten up by my redbreast really badly.( I removed the redbreast and put him in my pond where he was eaten by my bass.....). There is fuzzy stuff growing on his wounds. I want to put salt in but i don't have any and can't get any that you could put in an aquarium. All I have is Epsom salt which I've heard isn't helpful for wounds, and I have colonial salt which I don't know if is safe to put in.