There are two main types of chemicals – Chlorine & Bromine, each has it’s merits.
If you prefer to use chlorine: Add Spa Essentials Chlorinating Concentrate at a rate of 1/2 teaspoon per 100 gallons. Repeat additions every 15 -20 minutes until 3-5ppm chlorine residual is established. Use water test strips or test kit to check sanitizer level.
If you prefer to use bromine:Add Spa Essentials Brominating Concentrate at a rate of 1 teaspoon per 200 gallons. Repeat additions every 15 – 20 minutes until 3-6ppm bromine residual is established. Or add Brominating Tablets to an automatic feeder or floater to establish bromine level. Use water test strips or test kit to check sanitizer level.