We have used SilkBalance since we purchased our spa 9 months ago. My wife has a medical condition that causes her pain in most of her body and the spa, although temporary, sometimes helps lessen her pain enough to allow her to fall asleep without medication. We chose SilkBalance because it is easy to use, cuts the need for additional products, is not harsh on our skin, but ultimately, the main reason is that we can go from spa to bed without smelling like chlorine. Our water is always beautifully clear and we are pleasantly surprised that we use our spa more than we thought we originally would. Thank you – SilkBalance!