I am just starting my second year with a brand new pool. Chlorinated via SWG. The pool is 13,500 gallons and last year I was going through a gallon of muriatic acid per week. I've been open for 5 days now and it looks like the trend continues.....lots of muriatic acid. Is this expected? What are your SWG experiences from a PH standpoint? Are you too adding acid everyday?