BioGuard Balance Pak 300 - 7 lb pool treatment chemicals Supports sanitizer performance: Properly balanced

Supports sanitizer performance: Properly balanced water helps sanitizers work more effectively

and mess-free way to keep your water clean—whether you’re a first-time user or just need one more cartridge to finish the season strong

For compatible in-line systems: Made for select hot tubs with the built-in FROG @ease In-Line System

Helps reduce weekly algae treatments: Long-lasting formula supports a simpler maintenance routine

and FROG Bam delivers 90 days of algae prevention

BioGuard Balance Pak 300 - 7 lb pool treatment chemicals Supports sanitizer performance: Properly balancedBioGuard Balance Pak 300 7 lb Calcium Hardness Increaser for Protecting Pool Equipment and Surfaces BioGuard Balance Pak 300 is a calcium hardness increaser designed to raise low calcium hardness levels in swimming pool water. This 7 lb size is a practical option for correcting hardness levels and helping protect pool equipment, plaster, liners, and surfaces from damage caused by water that is too soft. When calcium hardness is too low, pool water can