SpaPure pH Up | Spa pH Increaser

SpaPure pH Up is a pH increaser that corrects low, acidic spa water. Built on sodium carbonate (soda ash), it raises pH back into the safe range quickly — protecting your spa and making the water comfortable to soak in again.

Low pH is more damaging than most owners realize. When water turns acidic (below 7.2), it becomes corrosive: it eats at heater elements, pump seals, and metal fittings, degrades the spa shell over time, and stings the eyes and dries the skin of anyone who gets in. Acidic water also burns through sanitizer faster, so you spend more on chlorine or bromine while getting worse results. pH naturally drifts down as you sanitize and use the spa, so periodic correction is simply part of ownership.

pH Up reverses that drift in minutes. Get pH back into range and the water stops attacking your equipment, your sanitizer works efficiently again, and the soak feels comfortable instead of harsh.