What is the recommended alkalinity range for a spa in parts per million (ppm)?

The recommended alkalinity range for a spa is crucial because it helps to stabilize the pH levels of the water, which is essential for the effectiveness of chlorine and other disinfectants used in the spa. An optimal total alkalinity range typically falls between 120 and 150 parts per million (ppm). This range ensures that the waters remain balanced, which minimizes the chances of corrosion in spa equipment and surfaces, as well as prevents the development of irritants that can affect skin and eyes. Maintaining the alkalinity within this range contributes to a comfortable and safe environment for users.

Options outside this range may not provide adequate stabilization, leading to fluctuations in pH that may require more frequent adjustments and could potentially affect water quality and sanitation standards.