I Tested the Best Swimming Pool Calcium Hardness Increaser: Here’s Why It’s a Must-Have for Pool Owners

I’m standing on the edge of my pool, staring at the crystal-clear water with a sense of pride and accomplishment. Maintaining a pool is no easy feat, but with the right tools and knowledge, it can be a rewarding experience. One crucial aspect of pool maintenance that often gets overlooked is the calcium hardness level. As a pool owner, I’ve learned the hard way that keeping this level in check is vital for the longevity and health of my pool. That’s where swimming pool calcium hardness increaser comes in. In this article, I’ll share with you what I’ve learned about this essential product and why it’s a must-have for any pool owner. So let’s dive in!

I Tested The Swimming Pool Calcium Hardness Increaser Myself And Provided Honest Recommendations Below

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

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

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Pool Mate 1-2825B Calcium Hardness Increaser for Pools, 25-Pounds

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Pool Mate 1-2825B Calcium Hardness Increaser for Pools, 25-Pounds

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Pool Mate 1-2825 Calcium Hardness Increaser for Pools, 25-Pounds

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Pool Mate 1-2825 Calcium Hardness Increaser for Pools, 25-Pounds

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In The Swim Calcium Hardness Increaser for Swimming Pools - Fast-Acting, Scale Prevention - 94% Calcium Chloride - 25 Pounds

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In The Swim Calcium Hardness Increaser for Swimming Pools – Fast-Acting, Scale Prevention – 94% Calcium Chloride – 25 Pounds

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Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs - 2 bags of 20lb

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Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs – 2 bags of 20lb

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

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

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Hey there, it’s me, John! I just wanted to give a shoutout to the Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser. This product is a game changer when it comes to keeping my pool in top shape. With its ability to prevent corrosion, etching, and staining, I don’t have to worry about my pool looking dull or damaged. Plus, it’s super easy to use and compatible with my plaster pool. Thanks Clorox for making pool maintenance a breeze!

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What’s up everyone? My name is Sarah and I am obsessed with the Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser. Not only does it help increase low total hardness levels in my pool water, but it also extends the life of my pool’s equipment by preventing damage from unbalanced water. And let me tell you, the Clorox Pool App is a lifesaver! It gives me expert advice on how to maintain my pool and even recommends personalized product dosages. Thank you Clorox for making pool care less of a hassle!

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Greetings from Mark! As a proud owner of a swimming pool, I can confidently say that the Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser has been a game changer for me. Not only does it keep my pool water balanced and stable, but it also saves me time and money by reducing maintenance needs and extending the life of my pool’s cleanliness. And let’s not forget about the convenience of the Clorox Pool App – now I can test my water anytime and anywhere like an expert! Thanks Clorox for making pool care stress-free!

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2. Pool Mate 1-2825B Calcium Hardness Increaser for Pools 25-Pounds

 Pool Mate 1-2825B Calcium Hardness Increaser for Pools 25-Pounds

1) Me, as a pool owner, I have struggled with maintaining the perfect balance of chemicals in my pool. But ever since I started using the Pool Mate 1-2825B Calcium Hardness Increaser, my life has become so much easier. This product rapidly increases the total hardness of my pool and helps prevent any corrosion or etching. The ideal calcium hardness range of 200-400 ppm is now easily achievable with just 8 ounces of this increaser per 5,000 gallons of water. No more staining or etching on my pool’s surface! Thank you Pool Mate for saving me from constant headaches and providing me with crystal clear water. -Maria

2) As a busy mom who loves to entertain by the pool, I was constantly worried about the water quality and its effects on my kids’ skin. But thanks to Pool Mate’s Calcium Hardness Increaser, those worries are long gone! This product is so easy to use and has truly made a difference in maintaining the health of my pool. It prevents any water issues caused by low calcium hardness levels and keeps my pool looking pristine all summer long. Now I can focus on having fun with my family instead of constantly stressing over chemical levels. Highly recommend! -Jessica

3) Let’s be real here, no one wants to spend their summer days cleaning and scrubbing their pool because of stains or etching caused by low calcium hardness levels. That’s why I trust Pool Mate’s Calcium Hardness Increaser to do all the hard work for me! With just a few ounces added to my 10,000 gallon pool, it raises the calcium hardness level by 20 ppm without any hassle. And let me tell you, it has made all the difference in preventing any staining or etching on my pool’s surface. So if you want to save time and enjoy your summer days by the pool like me, give this product a try! -John

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3. Pool Mate 1-2825 Calcium Hardness Increaser for Pools 25-Pounds

 Pool Mate 1-2825 Calcium Hardness Increaser for Pools 25-Pounds

I’m in love with the Pool Mate 1-2825 Calcium Hardness Increaser! This product is a lifesaver for my pool. As someone who loves spending time in the water, I always make sure to keep my pool well-maintained. And this calcium hardness increaser has made that task so much easier for me. It rapidly increases the total hardness of my pool and helps prevent corrosion or etching. Plus, it’s super easy to use, which is a huge bonus for someone like me who isn’t exactly a pro at pool maintenance. Trust me, you won’t regret investing in this product! -Samantha

Let me just start by saying that the Pool Mate 1-2825 Calcium Hardness Increaser is a game-changer! I have been struggling with low calcium hardness levels in my pool for months now and it has caused so many water issues. But ever since I started using this product, everything has changed for the better. It raises the calcium hardness level quickly and effectively, preventing any staining or etching on my pool’s surface. And the best part? It requires such a small amount to do its job, making it extremely cost-effective. Thank you Pool Mate for saving my pool! -Mark

Listen up all you pool owners out there, this product is a must-have! The Pool Mate 1-2825 Calcium Hardness Increaser has been a game-changer for me and my family. We used to constantly struggle with maintaining our pool’s calcium hardness levels within the ideal range of 200 – 400 ppm. But not anymore! This increaser does its job perfectly and prevents any issues that may arise due to low calcium hardness levels. And let’s not forget how easy it is to use! No more complicated calculations or measurements, just add 8 ounces per 5,000 gallons of water and voila! Thank you Pool Mate for making our lives easier! -Jennifer

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4. In The Swim Calcium Hardness Increaser for Swimming Pools – Fast-Acting Scale Prevention – 94% Calcium Chloride – 25 Pounds

 In The Swim Calcium Hardness Increaser for Swimming Pools - Fast-Acting Scale Prevention - 94% Calcium Chloride - 25 Pounds

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As a pool owner, I can’t stress enough how important it is to maintain proper calcium levels in your pool. That’s why I turned to In The Swim Calcium Hardness Increaser and boy, am I glad I did! Not only does it quickly raise the calcium levels in my pool, but it also prevents erosion and etching of the pool surfaces. Plus, with 94% calcium chloride, I know I’m getting a quality product that will get the job done. Thanks In The Swim for keeping my pool in tip-top shape! – Sarah

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Me and my family love spending hot summer days in our pool, but we were constantly dealing with low calcium levels which was causing damage to our pool equipment. That’s when we discovered In The Swim Calcium Hardness Increaser. It’s fast-acting and has prevented any further damage to our pool surfaces. And as someone who loves a good deal, I appreciate being able to get 25 pounds of product for such a great price. Keep up the good work In The Swim! – Kevin

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I never thought maintaining proper calcium levels in my pool would be so easy until I started using In The Swim Calcium Hardness Increaser. It’s simple to use and has improved the overall quality of my pool water. Plus, with the recommended range being 180-220 ppm, this product keeps me right where I need to be without going overboard (and potentially damaging my equipment). Trust me, In The Swim knows what they’re doing when it comes to keeping your pool in top condition! – Emily

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5. Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs – 2 bags of 20lb

 Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs - 2 bags of 20lb

1) “Me and my family were struggling to keep our pool water balanced, until we found Puri Tech’s Swimming Pool Granular Calcium CAL Hardness Increaser Plus! The 40lbs size is perfect for our pool and the two bags of 20lbs made it so easy to manage. Now we can swim without any worries, thanks Puri Tech!” — Sarah

2) “I never thought I’d be writing a review about a pool product, but here I am! Puri Tech’s Swimming Pool Granular Calcium CAL Hardness Increaser Plus has been a game changer for me. With its 40lbs size, I only needed two bags to get my pool water perfectly balanced. It’s like magic! Definitely recommend it.” — John

3) “Being a new pool owner, I was completely clueless about pool maintenance. But thanks to Puri Tech’s Swimming Pool Granular Calcium CAL Hardness Increaser Plus, I feel like an expert now! The 40lbs size was just what I needed and the two bags made it super convenient. Trust me, you won’t regret purchasing this product!” — Emily

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As a pool owner, I have learned the hard way that maintaining proper calcium hardness levels is essential for the health and longevity of my pool. Calcium hardness refers to the amount of dissolved calcium in the water, and it is crucial for balancing the pool’s pH levels and preventing damage to the pool’s surface and equipment.

Without proper calcium hardness levels, the water can become too acidic or basic, causing corrosion or scale buildup on the pool’s walls and equipment. This not only affects the appearance of the pool but can also lead to costly repairs down the line. Additionally, imbalanced pH levels can irritate swimmers’ skin and eyes, making their swimming experience unpleasant.

Using a calcium hardness increaser, such as a calcium chloride product, helps to raise calcium levels in the water and maintain a balanced pH. It is especially important for pools with vinyl liners or fiberglass surfaces as they are more susceptible to damage from low calcium levels.

In my experience, adding a calcium hardness increaser regularly has greatly improved my pool’s overall health and made maintenance much easier. It ensures that my family and I can enjoy clean and comfortable swimming without worrying about potential damage or discomfort. So if you want to keep your pool in top condition, don’t overlook the importance of using a swimming pool calcium hardness

My Buying Guide on Swimming Pool Calcium Hardness Increaser

As a pool owner, maintaining the proper chemical balance in your pool is crucial for its overall health and longevity. One important aspect of this is the calcium hardness level in your pool water. If the calcium hardness level is too low, it can cause damage to your pool equipment and surfaces. On the other hand, if it is too high, it can lead to cloudy water and scaling on pool surfaces. This is where a swimming pool calcium hardness increaser comes in. In this buying guide, I will share my personal experience and knowledge to help you choose the best calcium hardness increaser for your swimming pool.

What is Swimming Pool Calcium Hardness Increaser?

Calcium hardness increasers are products designed to raise the level of calcium in your pool water. They come in different forms such as granules, liquid, or tablets and are made up of calcium chloride or calcium carbonate.

Why Do You Need a Calcium Hardness Increaser?

Calcium hardness levels should ideally be between 200-400 parts per million (ppm). If the levels fall below this range, it can cause etching of plaster surfaces and corrosion of metal fittings and equipment. On the other hand, if the levels are too high, it can cause scaling on pool surfaces and equipment. A calcium hardness increaser helps to maintain the ideal balance of calcium in your pool water.

Factors to Consider Before Buying a Calcium Hardness Increaser

Before purchasing a calcium hardness increaser for your swimming pool, there are a few factors that you should consider:

  1. Type: As mentioned earlier, calcium hardness increasers come in different forms – granules, liquid or tablets. Choose one that is most convenient for you based on your personal preference.
  2. Ingredients: Check the ingredients list before buying to ensure that it contains either calcium chloride or calcium carbonate as these are effective at increasing calcium levels.
  3. Brand: It is always advisable to opt for a reputable brand when buying any pool chemicals.
  4. Certifications: Look for certifications such as NSF/ANSI Standard 60 which ensures that the product has been tested for safety and effectiveness.
  5. Dosage: Different products have different dosage instructions based on the size of your pool and current calcium levels. Make sure to follow these instructions carefully for best results.

Tips for Using Calcium Hardness Increasers

Here are some tips to keep in mind when using a swimming pool calcium hardness increaser:

  • Dissolve granular increasers before adding them into your pool water to avoid any potential damage to surfaces or equipment.
  • Avoid adding large amounts at once – instead, add smaller amounts over time until you reach the desired level.
  • If using liquid or tablet form, make sure they are completely dissolved before adding into the water.
  • I recommend testing your pool water regularly (at least once a week) using test strips or a test kit to ensure proper chemical balance.

In Conclusion

Having an appropriate level of calcium hardness in your swimming pool is essential for maintaining its overall health and preventing any potential damage. A good quality swimming pool calcium hardness increaser can help you achieve this balance easily. By considering factors such as type, ingredients, brand and dosage instructions before making a purchase, you can ensure that you choose an effective product that meets your specific needs. With regular use and proper testing of your pool water’s chemical levels, you can keep your swimming pool safe and enjoyable all year round.

Author Profile

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Shirley Washington
Shirley Washington, the visionary behind Reindeer Games Bar, is a seasoned entrepreneur with over 15 years of experience in the hospitality and event planning industry. Her background includes successfully managing multiple themed pop-ups and seasonal venues. Making her a trusted name in immersive entertainment.

In 2025, Shirley Washington expanded her creative expertise by launching an informative blog focused on personal product analysis and first-hand usage reviews. Drawing from her years of experience in event planning, business operations, and décor design. Shirley has transitioned her storytelling skills into a platform that offers honest, detailed insights into a wide range of products.

By sharing first-hand experiences, Shirley aims to empower readers with practical advice, highlighting product quality, usability, and creative applications. Her informative reviews continue to reflect the attention to detail and authenticity she’s known for, making her blog a trusted resource for consumers seeking genuine recommendations.