BioGuard Balance Complete is a pH and alkalinity buffer, which helps keep levels balanced, and help prevent swings in these levels. Properly balanced ph and alkalinity will make your sanitizer work more efficiently, reduce eye and skin irritations, prevent scale and corrosion, reduce maintenance costs, improve clarity, and extend the lifespan of equipment and surfaces. Weekly use of this product will improve the quality of the pool and water, and reduce the effort in maintenance.