HT Brom for Spas is a clear solution of Bromide Salts which remain in your spa water to activate and enhance the performance of our HT Bromine Tablets. Properly used with HT Bromide Tabs it immediately create pure bromine dramatically reducing the scent of chlorine found in all traditional bromine tablets. RECOMMENDED USE Add 2 ounces of Brom Bank to your spa on the initial fill before adding Bromine Tablets. Then after each use add 2 ounces of HT Spa Activator. For enhanced sanitation of your spa water simply add 2 ounces of Brom Bank every 1 to 2 weeks depending upon use.