The first year that I owed my spa I rarely used it because I could never seem to get the chemicals in balance…I couldn’t trust the condition of the water. Since I switched to Silk Balance…3 years ago…I begin each day by having my morning coffee in my spa…watching the birds at the feeders. Silk Balance is a one step process combined with the addition of 1 Tbsp of Chlorine Concentrate WEEKLY! That’s it! Silk Balance has positively impacted my quality of life! Kathleen Moneymaker