Traditional Bromine Tablets are dissolving products that have a high percentage of chlorine and continue to emit a high scent. HT are non-dissolving, erosion based tablets that are extra hard and designed to work with HT Brom Bank a liquid bromide salt solution and HT Activator. Our products are simple to use, dramatically reduce the odor of chlorine in warm water hot tubs, and provide an improved sanitizing solution. Optimum range of active bromine residual is 2 to 5 ppm. RECOMMENDED USE On your initial fill add 1 ounce of HT Brom Bank per each 100 gallons of water to your spa. Install 3 Bromine Tablets per 300 gallons of spa water via the use of a Bromine Floating Dispenser. Adjust feeder to maintain a minimum of 2 ppm of active bromine residual. Maintain spa by adding no more than 3 tablets each time approximately every 5 to 7 days or as needed to maintain between 2 to 5 ppm. For additional sanitizing and to keep chlorine scent to a minimum add 2 ounce of HT Spa Activator after each use. HT Bromine Tablets can be used similar to traditional Tablets but not with the same effectiveness or benefits as prescribed within.