Pro-Kleens Fast Dissolving Stabilised Chlorine Granules are a 4-in-1 product that effectively sanitise and stabilise pool water, whilst also preventing algae growth and cloudy pool water. Pro-Kleens pH Reducing Granules reduce the pH levels with ease, making sure your water is a safe and hygienic place to bathe. Pro-Kleens pH Increaser is an additive to help increase the pH levels in swimming pools. It has a naturally high pH level of around 11.3 and 11.7. Pro-Kleen Anti Foam has a unique formula that effectively neutralises surfactants in your hot tub, preventing foam from appearing altogether. The perfect hot tub, pool or spa maintenance kit to keep your water clean and safe