I wanted to add more white clouds and maybe some kuhlis, but I don't have a hospital tank nor have I ever needed to use one (I know I'll likely get a reeming for this) but I wanted to know if there was something I could do to the new fish before I put them in the tank that would take care of external parasites. I have medicated food to feed for internal parasites, BTW. What do I do? Should I pass on adding more, or what? ~Angela