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- SpaGuard Spa Sentry pH Balance for Spas and Hot Tubs
- SpaGuard's Spa Sentry gives spa owners a one-step liquid additive to avoid pH bounce for up to 1 month per application, simply by adding directly to water.
- Before using this product you must first drain and refill your spa and set the desired level of both pH and alkalinity before applying
- Spa Sentry also contains a clarifying agent that removes dissolved metals in your water, giving your spa clearer and softer water that will be instantly noticed by bathers
- 1 Quart Bottle x2