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Keeping your pool's pH level balanced is not only important for swimmer comfort
This treatment improves filtration system performance by removing contaminants that cause clogging
total chlorine
This will not only improve sanitizer efficiency
The granules are totally soluble
BioGuard Arctic Blue Shock Size:2 lb Keeping your pool's pH levelBioGuard Arctic Blue Shock is the perfect first step in winterizing your pool, killing off bacteria, algae, and other contaminants that can wreak havoc on your pool during the long winter months. Its powerful granular formula can be quickly broadcast into your pool without needing dilution, saving you from handling messy liquids. When used in conjunction with an effective algaecide, your pool will stay clean and healthy throughout its winter slumber,
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