Sirona Defend Spa Scale & Stain Prevention 32 oz Cleaner maintenance is simple—and ownership costs

maintenance is simple—and ownership costs stay low

If chlorine levels won’t hold—especially during sunny weather—the issue is often missing stabilizer

and creates an inviting nighttime environment

Whether used in new installations or as a replacement for worn or leaking valves

Sirona Defend Spa Scale & Stain Prevention 32 oz Cleaner maintenance is simple—and ownership costsProtect Spa Surfaces, Plumbing, and Equipment from Scale Buildup Sirona Defend is a professional grade spa scale prevention treatment designed to protect hot tubs and spas from calcium scale, mineral deposits, and surface staining. In warm spa water, dissolved minerals such as calcium and magnesium can quickly fall out of solution, forming scale on heaters, jets, plumbing, and surfaces. Left untreated, this buildup reduces efficiency, restricts water