Calcium Plus 25 lbs. for Pools and Spas

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Calcium Plus 25 lbs.

Calcium (Hardness) Increaser for Swimming Pools or Spas

Raise the calcium hardness in your swimming pool. There are several disadvantages to having low calcium hardness in your swimming pool. Your Pool water may become corrosive causing etched plaster, harming equipment and fixtures or may cause stains.

To increase the Total Calcium Hardness in swimming pool water

  • Always try and maintain a 175-200 ppm level of Calcium Hardness in vinyl liner pools, 250-300 in concrete or plaster pools. The minimum level is 150 ppm.


  • Do not add this product within the same day of adding either pH increaser or an alkalinity increaser.
  • Test your swimming pool water for hardness with a water test kit or strips.
  • Do not pre-dissolve this product.
  • With the Pool Pump Running Broadcast the Calcium Hardness Increaser over the pool surface.
  • You may resume pool use after 15 minutes. Make sure the calcium hardness increaser is fully dissovled into the swimming pool.
  • Retest the hardness levels after 24 hours. Repeat the above steps as necessary until the approiate range of calcium hardness is reached.


  • 3 lbs per 10,000 of pool water will normally raise the hardness by 25 ppm.
  • With the pool pump running broadcast calcium hardness or the surface of pool. If some of the product lands on the bottom simply bush it. Will not harm bottom of your pool. Compatible with all pool chemicals: Doheny's, In the Swim, GLB, Poolife, Baquacil, Leslies, Blue Wave, Pristine Blue, Bio Guard & etc! Contains: 83-87% Active Calcium Chloride

Dosage Chart:

Pool Volume Increase level 50 ppm Increase level 100 ppm Increase level 200 ppm
2,000 Gal. 1.5 lbs. 3 lbs. 6.25 lbs.
5,000 Gal. 3 lbs. 6.25 lbs. 12.5 lbs.
10,000 Gal. 6.25 lbs. 12.5 lbs. 25 lbs.
20,000 Gal. 10.5 lbs. 25 lbs. 50 lbs.

Ingredients: Calcium Chloride, Water, Potassium Chloride, Sodium Chloride

Safety Data Sheet

Baleco Brand Page

Download the All-In-One Water Care Booklet

Water Balancer Type:
Calcium Hardness Increaser