Pool Season Alkalinity Up for Balanced Pool & Spa Water, Various Sizes Container Size:5 lb This cartridge can also replace

This cartridge can also replace open-ended filters with a 1

Hayward Part Number CX500RE Quantity Each (1) Length 19 3/4" Outer Diameter 7" Top Inner Diameter 3" Bottom Inner Diameter 3" Fits Into

A properly lubricated O-ring seats evenly

) and EC75A (40 sq

Pool Season Alkalinity Up for Balanced Pool & Spa Water, Various Sizes Container Size:5 lb This cartridge can also replace100% Sodium Hydrogen Carbonate Easy to use, this granular product raises total alkalinity in the pool and acts as a buffer to prevent pH bounce, staining, and corrosion. Raises total alkalinity in water Contributes to optimal sanitizer performance Protects pool surfaces from staining and corrosion Helps prevent pH fluctuation Available in various sizes.