BioGuard Balance Pak 300 Calcium Hardness Increaser 12lb Winter Closing This all-natural enzyme formula digests

This all-natural enzyme formula digests body oils

low-chlorine water

Proven mineral formula kills bacteria two ways

With bold colors and a giant design inspired by a classic three-flavor ice pop

BioGuard Balance Pak 300 Calcium Hardness Increaser 12lb Winter Closing This all-natural enzyme formula digestsBioGuard Balance Pak 300 Calcium Hardness Increaser 12lb BioGuard Balance Pak 300 Calcium Hardness Increaser 12lb supercharges soft water to protect your pool from corrosion and keep swims silky smooth. Fortify Your Pool Against Soft Water Damage! This bulk 12lb granular calcium chloride from BioGuard's Balance Pak line quickly raises calcium hardness to the ideal 200 400 ppm range, preventing equipment erosion, liner wrinkling, and plaster etching.