Extends Equipment Life
Unbalanced water can cause a corrosive environment that can damage your pool surfaces or equipment.
Balances Water
Helps to restore water parameters to their ideal ranges.

Maintain a Balanced Pool
Your pool chemistry can change quickly. Test your pool water weekly to ensure your Total Hardness level remains between 175 – 275 ppm. To raise Calcium Hardness, apply Calcium Hardness Increaser according to label direction.
Download the Clorox® Pool app on the Apple App Store or Google Play for expert water analysis and product and dosage recommendations.
This season, spend less time maintaining and more time enjoying your swimming pool!

Product reviews
Write ReviewIngredients should always be clearly listed
The package says “contains calcium chloride,” and makes no claim to be 100% calcium chloride, and that bit of information is part of the warnings. The label is not consumer friendly.
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Horrible Product
Ingredients cannot be found anywhere and there are little to no way to determine amounts to use. Material Safety Data Sheets for this product cannot be found anywhere either. Very, very, unsafe to use.
Ease of Use: 1
Effectiveness: 1
Works Great
Throw into deep end, brush, give it a day or so to circulate then take reading. Very easy to use, dissolved easy.
Ease of Use: 5
Effectiveness: 5
Bless your heart, It’s above The DANGER
Clorox products list their ingredients and percentages above the word DANGER, the BLOD word danger, on their packaging. While I haven’t quite figured out the balance of my own pool, the app works fine, the chanicals work fine, however, Me, the operator is trying to get a hang of it. Great product, great information, great research to- Lehman terms. We could all be chemist, for a summer, if you read the back of the package.!.
Ease of Use: 5
Effectiveness: 5
Works fine
Calcium hardness increaser is calcium chloride and it helps your vinyl liner or your hard surface pool from deteriorating faster
Ease of Use: 5
Effectiveness: 5
Works fine
Calcium hardness increaser is calcium chloride and it helps your vinyl liner or your hard surface pool from deteriorating faster
Ease of Use: 5
Effectiveness: 5
Ingredients
The Ingredients of Calcium hardness increaser is Calcium. Always broadcast Calcium as it produces heat when mixed with water, too much heat can be created if mixed in a bucket.
Ease of Use: 3
Effectiveness: 5
What are the ingredients???
Very difficult to impossible to find ingredients for this product. It’s not on the package and still haven’t found that info online nor on the Clorox site. The Clorox web site is terrible. Tried searching all products and it comes up with a pool problem list instead. Terribly in-user-friendly — if looking for anything other than a diagnosis and their solutions. I get the cram it down your throat sales thing but if just looking for product info to compare to other products it’s impossible. I’m putting the Clorox product back on the shelf and not buying it. I have no idea what’s in it. Too bad….
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