If your hot tub water is out of balance, you will need to add the appropriate chemicals to adjust the levels of pH, chlorine or bromine, alkalinity, or calcium hardness. Follow the instructions on the chemical package carefully and retest the water after adding the chemicals to ensure that the levels are within the recommended range. If you are unsure about how to balance your hot tub water, you can bring a water sample to The Hot Tub Store for analysis and advice.