Alkalinity$8.95 2 lb Effectively raises alkalinity levels in spa and hot tub water. Alkalinity quantity Add to cart SKU: 120-016020S12 Categories: Balancers, Spa Chemicals Related products Add to cart Instant Cartridge Cleaner $14.95 Add to cart Spa Marvel Conditioner $59.95 Add to cart Borate Plus $13.95 Add to cart Foam Out $9.95