1. Remove the Bromine Cartridge from the spa.
If the bromine level is over 4.0 ppm, remove the Bromine Cartridge and store in a safe place away from children, pets, metals or open flame until the level drops to 1.0 ppm.
2. Determine if the bromine cartridge setting is too high. When the bromine level has come down to 1.0 ppm, replace the cartridge in the spa at one setting lower than it was before. Test the water in 24 hours to determine if it has risen, declined or remained the same. Adjust the cartridge accordingly until 1.0 to 2.0 ppm is maintained.
3. Evaluate your spa usage. If the spa is not being used very often, then the need for bromine (bromine demand) is lessened. You may need to remove the system from the spa periodically to avoid continuous over bromination.