My husband and I absolutely love this product! This is our first spa and have waited a very long time to be able to purchase one and Silk has made it so incredibly easy to keep a balanced water PH and it also keeps our spa clean. We had always been concerned about the upkeep, but Silk has made it so easy. My skin feels so soft and wonderful after using the spa and that is all because of the SilkBalance! We love it and have recommended it to all of our friends who own spas. It is so worth it! It makes taking care of the spa almost carefree! Thank you for making such a wonderful product!!!