This hot tub chemical chart lists the chemicals commonly found in hot tubs. Testing your water is the only way to determine which chemicals you need to add and how much each is required to balance the hot tub chemistry. Keep test strips or, for greater accuracy, a liquid test kit on hand. You can also take a water sample to a local pool and spa store and have it tested. Once you've obtained the baseline readings shown in this hot tub chemical chart, you can begin measuring and adding the appropriate amounts of hot tub chemicals.
