Stabilizer/ Conditioner is a product designed to reduce chlorine loss caused by the UV rays from the sun. It works best by adding 30-50 ppm to your water in the spring. By doing so, this will greatly increase chlorine effectiveness and will actually cut chlorine consumption by 80%. Add stabilizer based upon water being replaced, not total gallon capacity. Use only 2 lbs per 10,000 gallons. Rx Clear stabilizer contains 100% cyanuric acid. Also known as sunscreen for your chlorine!