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 Sirona Chlorine/Bromine Spa Test Strips – 25 Count $15.99 Add to cart Enzyme Clarifier (Enzyme for Pools) $30.99 Add to cart Sale! 4.8lb 3″Chlorine Tablets $49.99 $44.99 Add to cart Sale! 5lb Instant Clear Chlorine Granules $51.99 $43.99 Add to cart