Pool Season Alkalinity Up - 25 Lb. Box pool-dimensions_25x50 and Poolvac XL

and Poolvac XL

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Pool Season Alkalinity Up - 25 Lb. Box pool-dimensions_25x50 and Poolvac XLThis is a 25 lb. box of Pool Season's Alkalinity Up. This granular 100% Sodium Hydrogen Carbonate product is easy to use. It raises total alkalinity in the pool and acts as a buffer to prevent pH bounce, staining, and corrosion. Alkalinity Up raises total alkalinity in the water and contributes to optimal sanitizer performance. It also helps prevent pH fluctuation.