I read the brief paragraph about Salt in Pool School, and I like the idea, but not sure why, so I have a few further questions:
> When/why would I want/need to add some salt to an otherwise fine pool?
> How much salt?
> Would adding ^ that much salt change any other pool chemical numbers for non-SWG pool?
> Will the salt level stay there, kind of like CYA, until water is replaced?