Home / Chemicals / Pool / Water Balancers / 4# pH Increaser View cart “Box of 12- 1 lb Bags of Rapid Shock –” has been added to your cart. $11.99 4# pH Increaser quantity Add to cart SKU: 84455 Categories: Chemicals, Pool, Water Balancers Product ID: 4370 Description Description Raises pH in pool water. Related products Sale! 4.5lb NST Prime (Non Stabilized Tablet) $37.99 $34.99 Add to cart Sale! 35lb Instant Clear Chlorine Granules $321.99 $281.99 Add to cart 5lb Rapid Shock $34.99 Add to cart Sale! 1lb Bag of Turbo Shock $10.99 $8.99 Add to cart