SpaGuard® Spa Sentry® One-Step pH Control, 32 fl oz 42638BIO
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Key Features & Benefits
One-Step pH Control
Controls pH in one easy step
Up to Two Months
Engineered for seamless compatibility with original mounting points for secure placement.SpaGuard® states it controls pH for up to two full months
Fewer Adjustments
Cuts down on routine pH corrections between water changes
1 Quart Liquid
946 mL bottle; dose per the label for your spa's volume
Genuine SpaGuard®
Manufactured for BioLab, Inc., part number 42638BIO
Check Compatibility
Not for plaster or calcium grout spas or biguanide sanitizers
Product Overview
SpaGuard® Spa Sentry® controls the pH of spa and hot tub water in one easy step. SpaGuard® states it controls pH for up to two full months, which cuts down on routine pH adjustments between water changes. It is a liquid in a 1 quart (946 mL) bottle.
Add Spa Sentry® at the dose shown on the label for your spa's volume and follow the label directions. It controls pH; it does not sanitize, so keep up your normal sanitizer and shock routine and keep testing the water.
Check compatibility before buying. SpaGuard® states that Spa Sentry® should not be used in spas with plaster finishes or grouting that contains calcium, or in spas using biguanide sanitizers, such as the SpaGuard® Soft Soak® system. The label carries the CAUTION signal word: may cause eye irritation. Keep it out of reach of children and do not mix it with other chemicals.
Frequently Asked Questions
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It controls the pH of spa and hot tub water in one easy step.
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SpaGuard® states Spa Sentry® controls pH for up to two full months.
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Add the dose shown on the label for your spa's volume and follow the label directions.
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No. SpaGuard® states Spa Sentry® should not be used in spas using biguanide sanitizers.
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Not if the spa has a plaster finish or grouting that contains calcium. SpaGuard® says not to use it in those spas.
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No. It controls pH only. Keep using your normal sanitizer and shock, and keep testing the water.
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Yes. Keep testing regularly so you can catch changes from heavy use or water top-ups.
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The label carries the CAUTION signal word: may cause eye irritation. Keep out of reach of children.
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1 quart (32 fl oz, 946 mL). Part number 42638BIO.
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