What is hot tub Total Alkalinity?

Keeping the total alkalinity (TA) balanced helps maintain proper pH, prevents damage to equipment, especially the heater, keeps the water clear, and prevents scale buildup. In chlorine, bromine, and saltwater spas, the alkalinity should be maintained from approximately 106 to 150 ppm. Levels above this will not necessarily cause problems, but other factors should be taken into account, such as the Calcium Hardness, average temperature, and pH. Perform a complete spa water analysis and follow ALEX® Pro instructions for TA adjustment. Total alkalinity is lowered by the use of Brominating Tablets and regular use of Spa Shock, so it is important to test it periodically and adjust as needed. Test total alkalinity at least once every three to four weeks, depending on the amount of use the spa is getting.

If the total alkalinity is high, use SpaGuard® pH Decreaser to gradually lower it over a period of days. Make sure aeration is off when you are adding pH Decreaser.

If the total alkalinity is low, use SpaGuard® Total Alkalinity Increaser according to label instructions or ALEX® Pro recommendations.