Sirona Defend Spa Scale & Stain Prevention 32 oz Cleaner waterproof silicone adhesive designed for

waterproof silicone adhesive designed for demanding pool

Proper sizing is critical—an incorrect gasket can pinch

maintenance is simple—and ownership costs stay low

reliable results

Filtration issues often show up as performance problems long before visible damage occurs

Sirona Defend Spa Scale & Stain Prevention 32 oz Cleaner waterproof silicone adhesive designed forProtect 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