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 Sale! Box of 12- 1 lb Bags of Rapid Shock – $95.99 Original price was: $95.99.$77.99Current price is: $77.99. Add to cart Sale! 1lb Bag of Turbo Shock $10.99 Original price was: $10.99.$8.99Current price is: $8.99. Add to cart Sale! 4.8lb 3″Chlorine Tablets $49.99 Original price was: $49.99.$44.99Current price is: $44.99. Add to cart Sale! 65 lb Turbo Shock $487.99 Original price was: $487.99.$405.99Current price is: $405.99. Add to cart