Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bicarb (Alkalinity Increaser) View cart “50lb 3″ Chlorine Tablets” has been added to your cart. $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! 1lb Bag of Rapid Shock $6.99 $5.99 Add to cart Sale! 5lb Turbo Shock $42.99 $36.99 Add to cart Sale! 1lb Bag of Turbo Shock $10.99 $8.99 Add to cart Sale! 20lb 1″ Chlorine Tablets $189.99 $174.99 Add to cart