I have been a spa owner for 4 years now and started off with a salt water system then converted to chlorine. Obviously this requires daily maintenance to keep things balanced. That was until I found silk balance. Just one time per week and some sanitizer every now and then and my water stay clean and clear. This is great in the winter when it’s cold and snowy as you don’t have to be out in the elements fiddling with chemicals trying to balance your water. With silk balance, you just pour some in weekly and your good to go. Great product that also works well with a silver sanitizer I have found. Thanks silk balance.