Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) $49.99 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 1lb Bag of Non-Chlorine Oxidizer $12.99 Add to cart Sale! 1lb Bag of Turbo Shock $8.99 $7.49 Add to cart Sale! 4.5lb NST Prime (Non Stabilized Tablet) $37.99 $34.99 Add to cart Sale! Case of 4 – Oxidizer (Shock) $114.99 $91.99 Add to cart