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HELPS PREVENT CORROSION OF YOUR POOL'S PLUMBING SYSTEM!
- A low hardness level can cause corrosion of your pool's plumbing and heater as well as stain or etch your pool's surface.
- When the hardness of your pool water drops below 150 ppm, just add Calcium Hardness Increaser.
- Granular. Calcium Chloride.
- Dosage: 5 lbs. per 10,000 gallons will raise the hardness level approximately 40 ppm.
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