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Hudson Bay
Locking up metals and excess calcium from the start prevents stains and scale before they ever have a chance to form
Works with Cast Iron and Stainless Steel
and algae as effectively as any conventional system
and delivers more predictable
SpaGuard Spa Sentry | One-Step pH & Softener Rx Therapy Hudson BaySpaGuard Spa Sentry is an easy, one step liquid that maintains a stable, comfortable pH in your spa or hot tub and softens the water at the same time. For many owners, balancing water means juggling several separate products and chasing numbers that won't sit still. Spa Sentry is designed to make that far simpler: a single treatment that holds pH steady and removes the calcium that makes water hard, eliminating the need for many of the individual