Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) $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! 4.5lb NST Prime (Non Stabilized Tablet) $37.99 $34.99 Add to cart 1lb Bag of Non-Chlorine Oxidizer $12.99 Add to cart Sale! 1lb Bag of Turbo Shock $10.99 $8.99 Add to cart 7.5lb Alkalinity Up $32.99 Read more