Sirona Spa Up | Hot Tub pH Increaser

Sirona Spa Up is a fast-dissolving granular balancer that raises low pH — and total alkalinity along with it — to bring acidic spa water back into a safe, comfortable range. Built on soda ash (sodium carbonate), it works quickly to correct water that has drifted below 7.2. Low pH does real damage, quietly. Acidic water is corrosive: it attacks heater elements, pump seals, and metal fittings, wears at the spa shell over time, and stings the eyes and dries the skin of everyone who gets in. It also burns through sanitizer faster, so you spend more on chlorine or bromine while getting worse results. And because pH naturally drifts as you sanitize and use the spa, correcting it periodically is simply part of ownership. Spa Up reverses that drift fast. Bring pH back above 7.2 and the water stops attacking your equipment, your sanitizer returns to full effectiveness, and the soak feels gentle and inviting again — the balanced foundation of genuinely restorative water. Pro Tip: Spa Up and Alkalinity Up are not the same product. Spa Up is soda ash, which drives pH up strongly — reach for it when your pH is low. Alkalinity Up is sodium bicarbonate, which raises total alkalinity with only a gentle effect on pH. If your alkalinity is what's low, start with Alkalinity Up; if pH is the problem, Spa Up is the right tool. Brand Sirona®