SpaBoss X-It will eliminate both chlorine and bromine residual in the water. If excessive chemical has built up in the water, X-It will reduce the ppm. Use X-It when switching your disinfectant (eg. Chlorine to Bromine, Bromine to Chlorine).
Sprinkle X-It on the water surface. To reduce 10 ppm of disinfectant per 1000 L, add 30g of X-It.