Hello, I want to say my family and I are happy with SilkBalance. We used another product for seven years and never could balance it right. The product that we did use smelled and the hot tub was always cloudy. I would recommend SilkBalnce to anyone that has problems with the hot tub chemicals they are using now. It feels refreshing to use our hot tub now with SilkBalance. Thank you, Mrs Linda Tomczak