SpaGuard Spa Sentry (1 quart)

David's Home Entertainment and Recreation Verified independent store

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Spa Sentry (1 quart). • Phosphate buffer• Easy, one step liquid• Helps maintain proper pH• Softens water by removing calcium• Not for use in plaster or tile-surface spas• Not for u se in Soft Soak® spasEasiest way to control pH. Expect up to two months of clear, pH stable water. Show more