Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) View cart “20lb 1″ Chlorine Tablets” has been added to your cart. $69.99 50lb bag of Sodium Bicarb (Alkalinity Increaser) quantity Add to cart SKU: AAA-8604 Categories: Chemicals, Chlorine Free, Chlorine/Bromine, Clarifiers/Maintenance, Pool Product ID: 2220 Description Description Used to increase the Alkalinity in Pool Water. Related products Sale! 4.8lb 3″Chlorine Tablets $49.99 $44.99 Add to cart 1lb Bag of Non-Chlorine Oxidizer $12.99 Add to cart 5lb Rapid Shock $34.99 Add to cart Sale! 5lb Turbo Shock $42.99 $36.99 Add to cart