Measure enough calcium chloride to raise the hardness level. Use 1 1/4 pounds of product for every 10,000 gallons of water if you need to raise the level by 10 parts per million. Use 2 1/2 pounds (per 10,000 gallons) to raise the level by 20 parts per million, or use 6 1/4 pounds of product (per 10,000 gallons) to raise the hardness level by 50 parts per million.
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how to raise calcium level for mineral water pool
in Swimming Pool Forum
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Measure enough calcium chloride to raise the hardness level. Use 1 1/4 pounds of product for every 10,000 gallons of water if you need to raise the level by 10 parts per million. Use 2 1/2 pounds (per 10,000 gallons) to raise the level by 20 parts per million, or use 6 1/4 pounds of product (per 10,000 gallons) to raise the hardness level by 50 parts per million.