Silk Balance is a revolutionary step forward in simplifying how you deal with water in your spa. Our patented advanced formula balances and purifies your spa water automatically. This revolutionary change means it is done with one simple application using only Silk Balance. More importantly, it prevents dangerous bacteria build up. Silk Balance will avoid all the time involved in adjusting, mixing, guessing, and using the hazardous chemical method. All you simply have to do is just measure and add.