Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) $44.99 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 35lb Instant Clear Chlorine Granules $399.99 Read more Sale! 10lb NST (Non Stabilized Tablet) $80.99 $69.99 Add to cart Baqua Spa Filter Cleaner $14.99 Add to cart 5lb Turbo Shock $35.99 Read more