The Clearwater® Swimming Pool Starter Kit is great for transforming a grimy pool into a clean and healthy swimming environment. Even if your pool looks like sin and smells like a bin, the chemicals contained in the Starter Kit will work their magic and make it sparkle. The chemical starter kit contains a 500g container of rapid-dissolving Chlorine Granules which disinfect pool water, eliminate bacteria and kill harmful organisms by producing free active chlorine (FAC). The starter kit also includes a 500ml bottle of Algaecide, which prevents the build-up of algae and produces clearer, cleaner and healthier water. Twenty-five swimming pool Test Strips are also included. These strips can be used to check that the alkalinity, chlorine and pH levels of pool water are suitable for swimming. PH levels should be between 7.2 and 7.6. To maintain a consistent pH balance the Starter Kit contains a 500g container of pH Plus and a 700g container of pH minus, which can decrease or increase pH levels. As with all chemical products, instructions and warnings should be followed extremely carefully. Thankfully the Clearwater® Swimming Pool Starter Kit contains a Pool Treatment Guide and is clearly labelled with all of the necessary precautions. Kit includes: 500g Chlorine Granules for disinfection of water 500g pH Plus for increasing pH levels of water 700g pH Minus for decreasing pH levels of water 500ml Algaecide for preventing and controlling algae 25 Test Strips for testing alkalinity, chlorine and pH levels.