Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)

4.7 4.7 out of 5 stars | 4,468 ratings

Price: 11.87

Last update: 09-09-2024


About this item

Prevents Corrosion, Etching, and Staining: With Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser, you can safeguard your pool against corrosion, etching, and staining, ensuring its longevity and pristine appearance. Our product offers reliable protection, giving you peace of mind while you enjoy your pool.
Increases Low Total Hardness Levels: This product helps increase the low total hardness levels in swimming pool water, ensuring a balanced and stable environment for your pool. It restores water parameters to their ideal ranges.
Extends Equipment Life: Unbalanced water can cause a corrosive environment that damages your pool surfaces or equipment. This product prevents pool surface damage, reduces pool maintenance, extending the life of your pool's cleanliness.
Compatibility: Our Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser is ideal for plaster pools and areas with soft water.
Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations.

Product information


Top reviews from the United States

Laine and Paula
5.0 out of 5 stars Perfection!!
Reviewed in the United States on July 2, 2024
I recently began to use Clorox products over the past few years and I find that their pool chemicals work as most other brands and more importantly competitively priced.

Overall, their products work great,…
Customer image
Laine and Paula
5.0 out of 5 stars Perfection!!
Reviewed in the United States on July 2, 2024
I recently began to use Clorox products over the past few years and I find that their pool chemicals work as most other brands and more importantly competitively priced.

Overall, their products work great,…
Images in this review
Customer image
RAZOR5000
5.0 out of 5 stars Good product
Reviewed in the United States on August 29, 2024
Would definitely purchase again.!!!
ChemE_75
5.0 out of 5 stars Best price I’ve found
Reviewed in the United States on July 30, 2024
This stuff is about as basic a chemical as it gets. Calcium carbonate is simply used to raise the hardness of soft water to protect the spa’s metal pump and piping components. Don’t need high hardness, but our water runs 80-100 ppm so takes a bit of calcium to boost it after periodic top offs. Calcium ice melter would work but it’s kind of dirty so forced to buy these purified versions. Absolutely no benefit to buying a more expensive version. Buy the cheapest you can find. This one seemed reasonably cheap.
lin thompson
4.0 out of 5 stars It works as outlined
Reviewed in the United States on May 7, 2024
Used a 4# bag & raised calcium to an acceptable level.
Momof2boys
5.0 out of 5 stars Blue Pool Heaven!
Reviewed in the United States on May 19, 2024
We love all the Clorox pool products- they are easy to use and the pool looks amazing!
Brent
5.0 out of 5 stars Works well with Clorox App
Reviewed in the United States on August 17, 2024
The Clorox App makes adding this chemical in the appropriate amount easy. Product works well.
Tammy S
5.0 out of 5 stars Good value
Reviewed in the United States on August 22, 2024
Better value that buying small bottles
todd j g
5.0 out of 5 stars Excellent product
Reviewed in the United States on July 31, 2024
Great product for hot tub

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