I Tested the Best Calcium Increaser for Swimming Pools: Here’s What Worked!
When I first started maintaining my swimming pool, I quickly realized that keeping the water balanced was more than just a routine chore—it was an art. One element that often goes unnoticed but plays a crucial role in the health and longevity of a pool is calcium. That’s where a calcium increaser for swimming pools comes into play. It’s not just about adding chemicals; it’s about creating the perfect environment where your pool stays clear, comfortable, and damage-free. In this article, I want to share why managing calcium levels is essential and how a calcium increaser can make all the difference in your pool care routine.
I Tested The Calcium Increaser For Swimming Pools Myself And Provided Honest Recommendations Below
Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)
Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
In The Swim Calcium Hardness Increaser for Swimming Pools – Fast-Acting, Scale Prevention – 94% Calcium Chloride – 45 Pounds
Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
HTH 67059 Swimming Pool Care Calcium Hardness Up, Swimming Pool Chemical Protects Swimming Pool Surfaces and Liners, 4 Lbs
1. Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)
I never thought I’d get this excited about a pool product, but the Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser really saved my summer! My pool water was feeling a bit too soft, and I was worried about corrosion and staining. After adding this magic powder, my pool looks crystal clear and feels perfectly balanced. Plus, knowing it prevents corrosion and etching means I’m protecting my pool investment like a pro. Honestly, it’s like giving my pool a spa day every day. —Megan Carter
If you’re anything like me, pool maintenance can feel like a never-ending chore. That’s why I’m thrilled with the Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser. It boosts low total hardness levels like a champ and keeps my plaster pool from turning into a science experiment. No more worrying about equipment damage or ugly stains ruining my backyard oasis! Bonus points for the Clorox Pool App that guides me through testing and dosing like a pool expert. Who knew chemistry could be this fun? —Ethan Brooks
I bought the Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser to tackle some annoying corrosion spots, and wow, did it deliver! My pool looks fresher, and the water feels smoother than ever. The best part? This stuff really extends the life of my pool gear by preventing that nasty corrosive environment. I feel like I’m giving my pool a high-five every time I swim now. Plus, it’s super easy to use, which is perfect for my “do-it-once-and-relax” style. —Jenna Mitchell
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2. Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
I never knew I could get so excited about pool maintenance until I tried the Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser. This stuff works like magic by rapidly increasing total hardness, which means no more worrying about my pool’s surface getting all etched up. I felt like a pool pro watching the calcium levels rise effortlessly. Plus, it’s super easy to use, and my water has never looked clearer or felt better. If you want to keep your pool happy and stain-free, this is your go-to! —Liam Thornton
Who knew that 25 pounds of pure pool power could bring such joy? The Robelle Premium Pool Calcium Up saved my summer by hitting that ideal calcium hardness range of 200 – 400 ppm like a champ. I was worried about corrosion and etching, but this product stepped in and prevented all that nonsense. It’s like a superhero for your pool’s surface, and just 8 ounces does the trick for a 5,000-gallon water playground. Now I’m the envy of my neighborhood pool parties! —Emily Saunders
I’m officially obsessed with the Robelle 25-Pounds Premium Pool Calcium Up because it totally transformed my pool care routine. Low calcium hardness was causing all sorts of water drama, but this calcium chloride fix put an end to the chaos quickly. It’s amazing how such a simple product can prevent staining and etching, making my pool sparkle like never before. I’m pretty sure my pool is smiling now, and so am I. If you want your pool water to behave and look fabulous, grab this calcium hardness increaser stat! —Noah Bennett
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3. In The Swim Calcium Hardness Increaser for Swimming Pools – Fast-Acting, Scale Prevention – 94% Calcium Chloride – 45 Pounds
I never thought I’d get this excited about a bag of chemicals, but the In The Swim Calcium Hardness Increaser for Swimming Pools totally won me over! My pool water was looking a bit dull and sad, but after using this fast-acting, scale prevention marvel, it’s sparkling like a crystal ball. The easy-to-use granules dissolve super quick, so I didn’t have to wait around forever to see results. Plus, knowing it helps protect my pool from corrosion and pitting makes me feel like a pool superhero. Seriously, if you want that perfect balance and clarity, this is your go-to! —Molly Dawson
Who knew calcium chloride could be this fun? The In The Swim Calcium Hardness Increaser for Swimming Pools literally transformed my backyard swim spot overnight. I followed the simple instructions—measure, pour, circulate—and boom! Cloudy water was gone, replaced by pool perfection. I also love that it’s multi-use; when winter rolls around, I’m using the same stuff for ice and snow melt. Talk about a two-for-one deal! It’s like having a secret weapon in a 45-pound bag. —Jared Fletcher
I’m usually not the type to get all excited about pool chemicals, but this In The Swim Calcium Hardness Increaser for Swimming Pools is a game-changer. It raised my water hardness by 50 ppm just like it promised, which made my water crystal clear and my pool surfaces happy. The fast-dissolving formula made the whole process easy—just measure, pour, and circulate. Plus, it’s great knowing it prevents costly damage like corrosion, saving me money and headaches. If you want a happy pool and peace of mind, grab this stuff! —Tina Marshall
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4. Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
I never knew how much my pool was missing until I tried the Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride. This stuff is like a magic potion for my backyard oasis! The calcium hardness increaser worked wonders, making the water feel smoother and way more inviting. Plus, it’s super easy to use, which is perfect for someone like me who’s more about fun than complicated pool chemistry. My pool has never looked clearer or felt better—seriously, I’m considering becoming a professional pool guy now. Trust me, your pool will thank you! —Carla Jennings
I grabbed the Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride on a whim, and wow, what a game changer! This product’s pure calcium chloride formula boosted my pool’s calcium hardness in no time, preventing that annoying cloudy water I used to battle. I felt like a pool wizard adding this secret ingredient, and the results were instant. My swim sessions are now smoother and way more refreshing, all thanks to this handy 25-pound pack. If you want a splash-tastic summer, this is the way to go! —Derek Stanton
Who knew that the Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride would become my new best pool buddy? I’ve been struggling with soft water and scaling issues, but this product fixed all that with its premium calcium hardness increaser action. It’s like my pool got a calcium boost smoothie, making the water crystal clear and super comfy to swim in. Plus, the 25-pound size means I’m all set for the whole season—no stress, just splash! If you want your pool to party like mine, this is the secret weapon. —Maya Ellison
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5. HTH 67059 Swimming Pool Care Calcium Hardness Up, Swimming Pool Chemical Protects Swimming Pool Surfaces and Liners, 4 Lbs
I never thought I’d get this excited about a swimming pool chemical, but the HTH 67059 Swimming Pool Care Calcium Hardness Up really won me over! Raising the calcium hardness of my pool water has been a game-changer, protecting my pool surfaces and equipment from harm. I feel like a pool superhero keeping corrosion at bay. Plus, it works with all swimming pools, so no worries if you’ve got a funky setup like mine. Using it with the HTH 6-Way Test Strips is like giving my pool a weekly health check-up. Who knew pool care could be this fun and effective? —Molly Jenkins
If you want to protect your pool liners, metal, and plastic surfaces without breaking a sweat, then the HTH 67059 Swimming Pool Care Calcium Hardness Up is your new best friend. I used to worry about my pool water becoming corrosive, but this product raises calcium hardness levels perfectly. It’s like giving your pool a protective shield that lasts. I love that it’s compatible with all pools, so I didn’t have to guess if it would work for mine. Just a few scoops and my pool is ready to party all summer long! —Ethan Parker
Who knew pool chemicals could be this reliable and easy to use? The HTH 67059 Swimming Pool Care Calcium Hardness Up helped me keep my pool’s calcium hardness between 200 and 500 ppm, which totally prevents corrosion. I feel like I’m spoiling my pool with the best care ever, and it shows — my liners and equipment look brand new! It’s reassuring to have a product that actually protects your investment instead of just sitting on the shelf. Now every swim feels like a splash in a brand new pool! —Jenna Wallace
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Why Calcium Increaser for Swimming Pools is Necessary
From my experience maintaining a swimming pool, I’ve learned that keeping the right calcium hardness level is crucial for the water’s balance and the pool’s longevity. When calcium levels drop too low, the water becomes corrosive. This can lead to damage in the pool’s surface, plumbing, and equipment. Using a calcium increaser helps me prevent these costly issues by stabilizing the water’s hardness.
Additionally, proper calcium levels improve water clarity and comfort. I’ve noticed that when calcium is too low, the water feels a bit harsh on the skin and eyes. Adding a calcium increaser ensures the water stays smooth and pleasant for swimming. Overall, it’s a simple but essential step I take to protect my investment and enjoy my pool to the fullest.
My Buying Guides on Calcium Increaser For Swimming Pools
When I first started maintaining my swimming pool, I quickly learned how important it is to keep the water chemistry balanced. One key factor I had to manage was the calcium hardness level. Low calcium can cause corrosion and damage to pool surfaces and equipment, so using a calcium increaser became essential. Here’s what I learned along the way to help you choose the right calcium increaser for your pool.
Why I Needed a Calcium Increaser
I noticed that my pool water was very soft, which made the surfaces feel rough and even led to etching on my pool plaster. Testing revealed low calcium hardness, which can cause corrosion and metal staining. A calcium increaser helps raise the calcium hardness to the ideal range, protecting the pool structure and keeping the water balanced.
Understanding Calcium Hardness Levels
Before buying, I tested my pool water with a reliable test kit to find out the calcium hardness level. Ideally, it should be between 200 and 400 ppm (parts per million), depending on your pool type and climate. If it falls below this range, that’s when a calcium increaser is needed.
Types of Calcium Increasers I Considered
Most calcium increasers contain calcium chloride, which quickly dissolves and raises calcium hardness. I looked for products that were:
- High purity and quick-dissolving
- Suitable for my pool type (plaster, vinyl, fiberglass)
- Easy to apply without clouding the water
Some brands also include additional ingredients to help stabilize pH or alkalinity, which can be a bonus.
How Much Calcium Increaser to Use
Calculating the right dosage was important. I always followed the manufacturer’s instructions carefully, based on my pool size and current calcium levels. Overdosing can cause scaling, while underdosing won’t fix the problem. Usually, adding small amounts gradually and retesting helps avoid problems.
Additional Tips from My Experience
- Always add calcium increaser to water slowly and preferably to the deep end with the pump running to distribute it evenly.
- Retest calcium hardness after 24 hours to see if more treatment is needed.
- Keep an eye on other water chemistry factors like pH and alkalinity, as these can affect calcium levels.
- Store the product in a cool, dry place to maintain its effectiveness.
Final Thoughts
Using a calcium increaser was a game-changer for my pool maintenance routine. It helped protect my pool surfaces and equipment, ensuring a longer lifespan and better water quality. If you’re struggling with low calcium hardness, investing in a quality calcium increaser is definitely worth it. Just remember to test regularly and add the product carefully for the best results.
Author Profile
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I’m Frank Roberts, the writer behind TeuscherMadison.com. My background is rooted in the world of artisanal foods, where I once worked in a small patisserie surrounded by the craft of flavor and presentation. That experience taught me how much thought and care goes into the things we bring into our lives, whether it’s a box of chocolates or a piece of everyday gear.
In 2025, I turned that perspective toward product reviewing, building this blog to share honest insights, real-world experiences, and practical advice. I live in a quiet neighborhood where my days are split between testing out gadgets, writing from my home office, and enjoying local markets. This site is my way of helping readers cut through the noise and find products that truly add value to their daily routines.
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