Robelle 32-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser, Made in USA
Product information
$66.17
Product price and availability are accurate as of January 21, 2026 at 12:31pm and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Additional details
Features
Calcium chloride for pools Rapidly increases total hardness Helps prevent corrosion or etching of pools Ideal calcium hardness range 200 - 400 ppm 8 ounces raises calcium hardness level 10 ppm per 5,000 gallons of water
This content is reader-supported. As an Amazon Associate, Pure Source earns from qualifying purchases.