salt, i just had a cray fish with some crazy worms alllllll over him, gave him a very heavy salt bath for like 5 min, when i say heavy i mean it. he was knee deep in visible salt and the water only covered him, swirld it around for a bit, he rolled over like he was dead, and i went to pick him up and he pinched the fire out of me, so i put him in some fresh water and like new, no parasites
Noted, thanks. It makes sense, salt baths are great for fresh water fish diseases.