BioGuard Balance Pak 300 is used to raise calcium hardness in swimming pool water. Surface life of pools can be greatly shortened if calcium remains low. Ideal calcium levels for pools are:
• Vinyl lined and fiberglass pools 175-225ppm • Concrete or plaster pools 200-275ppm
Pro Tip: Always divide Balance Pak 300 into 3 doses when applying, waiting a minimum of 6 hours between doses. Adding all of it at once could cloud the water.