Maintain optimal pool water quality with 7.5 lbs Alkalinity Up, a specially formulated pool water balancer designed to increase the total alkalinity of your pool water. Perfect for a variety of pool types, including chlorine, bromine, ozone, saltwater, and biguanide sanitizer systems, this powerful alkalinity increaser ensures your pool stays in top condition. With a substantial 7.5 lb size, it's perfect for regular maintenance, preventing pH fluctuations and keeping your water chemistry in balance. Enjoy clear, stable water and reduced maintenance with Alkalinity Up.