MaxTite pH Increaser is a natural, safe way to increase pH in spas or hot tubs. The water in your pool or spa should be, ideally, 7.4 on the pH scale. If your pH balance fluctuates too low, MaxTite pH Increaser can help prevent negative effects and restore pH balance. (pH too high? Try MaxTite pH Decreaser!)<p>Prevent bather discomfort — low pH can result in irritation to skin or eyes. Maintain equipment and liners, reduce risk of rusting, cracking, brittleness, and more. Low pH can reduce the life of circulating pump and reduce the effectiveness of chlorine. Pure 100% Soda Ash, made in USA. Premium quality assured.</p>