Since SilkBalance non-chlorinated spa treatment was recommended by our dealer last season, our hot tub has not only produced cleaner water but we have also noted less scale buildup and spa maintenance. Two other extremely important features of this water care to my wife include the lack of chlorine orders and skin irritations because of her recent breast cancer diagnosis. We highly recommend this product to our friends and neighbors or anyone else who asks. Ken and Jan Simpson St. Johns, Michigan