The only time i use salt is when i bring in new natives, Then only in my quarantine tank. It is a 15 breeder, and i added about a handful of aquarium salt at startup. run biowheel filter, no filter pads and, only add more when i change water after keeping the new fish there for a couple of weeks, Maybe does no good, but i never have disease problems, and i definitely dont need any in my show tanks, Dont really care for harsher chemicals although i realize they do have their place.