CPDI Acid Blue Muriatic Acid Swimming Pool pH Reducer Balancer and Concrete Cleaner | Buffered, Low-Fume - 1 GallonBrand: ACIDBLUE Color: Blue Features: AcidBlue by Champion is a buffered, low fume replacement for standard muriatic acid. Acid Blue uses a full strength, proprietary formula that is easier to use, ship and store. AcidBlue uses Vapor Reduction Technology to reduce harmful and annoying fumes. Vapor Reduction Technology reduces up to 90% of harmful vapors normally associated with 'old school' muriatic acid Controls the pH level of water in pools super