Pool Care Granule Alkalinity Increaser 5 lb
Test your water weekly to make sure pH is between 60 and 120 ppm. HTH Alkalinity Up is great for all pool types including vinyl-lined pools and saltwater systems. The HTH Alkalinity Up helps balance the total alkalinity in your pool water for healthy swimming. If alkalinity in your pool water measures below 60 add HTH alkalinity increaser directly to the surface to increase the alkalinity levels.