Our ProTeam Spa Brominating Tablets are sanitizing, disinfectant slow-dissolving brominating tablets for spas. 1 count package Available in 2 sizes: 1.5 lb. bottle or 4 lb. bucket Compressed 1" tablets for continuous sanitization of hot tub and spa water 61% available bromine & 27% available chlorine 92% Bromochloro-5 5-dimethylhydantoin Reliable sanitizing for safe spa or hot tub operation Brominating tablets are the best sanitizer for warm, heavily used water environments As bromine is used, it forms a bromine bank that is re-activated every time the spa is shocked All bromine tablets are not alike - some have more chlorine activator than bromine and lack the soft gentle feel of a bromine pool Our bromine tablets use just enough activator and become 100% bromine as it enters the pool Bromine is not as pH sensitive as chlorine - at a higher pH it is twice as active as chlorine When bromine is combined with organic matter, it is still an effective germ fighter Bromine does not deteriorate in storage Spa water balance is easier to maintain with bromine Lower odor than chlorine maintenance Applications: Initial bromine level should range between 3-5 ppm Fill bromine dispenser with Spa Brominating Tabs and adjust levels Add bromine tablets as needed, frequency will be determined by bather usage, spa brand, etc. This product is considered a "hazardous material," is air-restricted and cannot be shipped to Alaska or Hawaii.