- Calcium hardness increaser
- Keeps your pool and equipment free from damage
- Increases calcium hardness by 10 ppm per 1-1/4 lbs.
The calcium hardness level in a pool does not increase rapidly, but it is good practice to check the calcium hardness every month. Adding 1-1/4 pounds of hardness plus to 10,000 gallons of water will raise the calcium hardness by 10 ppm. **The minimum level of Calcium Hardness is 150 ppm.
Dosage: 1.25 lbs per 10,000 gallons
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