New install of SWG. The water is about 18 months old. I have used nothing except liquid chlorine and muriatic acid. I tested the salt level of the tap water at 310ppm. The pool water is at 1700ppm. I'm using an Apera EC60 meter. I'm just conducting a sanity check. Is that about what to expect? I was kinda surprised at the 1700ppm. Thank you.