Total Alkalinity Levels

Total Alkalinity (TA) is a measure of the spa water's ability to neutralize acid. In other words, it measures the concentration of alkaline substances in the water that can buffer the water's pH and prevent sudden changes in pH levels.

The ideal range for TA in a spa is between 80 and 120 parts per million (ppm). If the TA is too low, the pH level of the water can become unstable and fluctuate rapidly, leading to corrosion of metal spa equipment and irritation of eyes and skin of users. If the TA is too high, the water can become cloudy and cause scaling on spa surfaces.

To adjust the TA level, spa owners can add specific chemicals like sodium bicarbonate, sodium carbonate, or alkalinity increasers. If the TA level is too high, a pH decreaser can be used to bring the TA level down to the desired range. It is important to test the TA level of the spa water monthly and make adjustments as necessary to maintain a stable pH level and ensure comfortable and safe swimming conditions.