Natural Chemistry Spa Perfect, 2 Liter, Pack of 2, Makes Water Feel Soft and Silky, Removes Waterline Ring, Clogged Filters and Eye Irritation, Works with All Sanitizing SystemsBrand: Natural Chemistry Features: SMARTZyme Technology: Our Natural Chemistry Spa Perfect works to reduce waterlines and unpleasant odors in your hot tub. Featuring Smartzyme technology the product controls non living contaminants such as body oils, lotions, hair products and so much more. Makes Water Feel Soft and Silky: Get rid of a variety of contaminants from your spa water, transforming it from cloudy and filmy to crystal clear and inviting with