The core needs of any swimming pool is the filtration system which removes unsightly organic matter that feeds bacteria and algae plus the sanitiser which destroys any algae and bacteria which enters the water. Modern day pumps, filters and pool cleaners remove the organic matter very effectively and automatically, almost eliminating day to day maintenance. Chlorinators cleverly produce sufficient sanitiser to destroy bacteria and algae but almost none regulate the amount of sanitiser or adjust the water balance. The problem is, too much sanitiser can fade the pool colour, become corrosive, damage the pool shell and pool equipment. In addition, nearly all sanitisers affect the water balance (pH) rendering the sanitiser ineffective at destroying bacteria and requiring lots of corrective balancing chemicals to be added to the pool by the owner or pool specialist. High pH causes skin irritations and red eyes.