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 7.5lb Alkalinity Up $32.99 Read more Sale! 1lb Bag of Turbo Shock $10.99 Original price was: $10.99.$8.99Current price is: $8.99. Add to cart Sale! 35lb Instant Clear Chlorine Granules $321.99 Original price was: $321.99.$281.99Current price is: $281.99. Add to cart Sale! Box of 12- 1 lb Bags of Turbo Shock $131.99 Original price was: $131.99.$86.99Current price is: $86.99. Add to cart