Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) View cart “4.8lb 3″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 Enzyme Clarifier (Enzyme for Pools) $30.99 Add to cart Sale! 1lb Bag of Rapid Shock $6.99 $5.99 Add to cart 7.5lb Alkalinity Up $32.99 Read more Sale! 20lb 1″ Chlorine Tablets $189.99 $174.99 Add to cart