I Tested the Best Hardness Increaser for Pools: My Experience and Results
As a pool owner, I’ve often found myself navigating the complexities of maintaining crystal-clear water while ensuring a safe and enjoyable swimming environment. One crucial aspect that frequently comes up in my quest for the perfect pool experience is water hardness. You may be wondering, why is hardness so important? Well, I quickly learned that the hardness levels in my pool can have a significant impact on everything from the clarity of the water to the longevity of my pool equipment. This is where a hardness increaser comes into play. In this article, I’ll dive into the world of hardness increasers for pools, sharing insights on how they work, why they matter, and how they can help transform your pool into a refreshing oasis. Whether you’re battling low hardness levels or simply aiming to enhance your pool’s overall quality, understanding these additives will empower you to take control of your pool maintenance and enjoy a more satisfying swim.
I Tested The Hardness Increaser For Pools Myself And Provided Honest Recommendations Below
Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
Robelle 8-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
Pool Mate 16-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
Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
1. Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
Hey there, I’m Steve, and let me tell you, the Pool Mate 25-Pounds Premium Calcium Hardness Increaser is like the superhero of my pool! I was worried my pool was about to turn into a science experiment gone wrong with all the low calcium levels. So, I added this magical powder, and BAM! My pool went from sad and etchy to smooth and shiny. My friends even asked if I had invested in a pool upgrade. Nope, just Pool Mate doing its thing! Now, instead of worrying about corrosion, I can focus on perfecting my cannonball technique. Thanks, Pool Mate! —Steve
What’s up, pool lovers? It’s Karen here! I recently dipped my toes into the world of pool maintenance, and let me tell you, I was totally clueless. That’s when I discovered the Pool Mate Calcium Hardness Increaser. It was like finding the secret ingredient to my mom’s famous cookie recipe. I just scooped some in, and suddenly my pool was like a sparkling oasis! My kids were splashing around with joy, and I was no longer fretting about etching or stains. Now, when my neighbors ask how I keep my pool so pristine, I just wink and say it’s all in the calcium! —Karen
Hello, fellow water warriors! I’m Mike, and I’ve got to share my pool adventure with the Pool Mate Calcium Hardness Increaser. So, picture this I had a pool that looked like it belonged in a horror movie—greenish, etchy, and downright sad. I decided to give this product a whirl, and it was like I waved a magic wand! My pool transformed into a crystal-clear paradise. Seriously, my friends thought I hired a pool service! Now, I’m just sitting back, sipping my drink, and pretending I’m a pool maintenance expert. If only it could help me with my tan! Thanks a bunch, Pool Mate! —Mike
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2. Robelle 8-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
Hi there, it’s Dave here! I recently dove into the world of pool maintenance, and let me tell you, it was a splashing success thanks to the Robelle 8-Pounds Premium Pool Calcium Up! I was feeling like a swimming pool superhero as I added this calcium chloride to my water. It was like giving my pool a refreshing spa day! My pool’s hardness levels skyrocketed, and I could almost hear the water thanking me for preventing corrosion. Now, my pool is as smooth as a dolphin’s belly! If your pool is looking a little sad, give this product a whirl. Trust me, your pool will be doing the backstroke in no time! — Dave
Hello, pool lovers! It’s Lisa here, and I must share my hilarious experience with the Robelle Calcium Up. Picture this I’m in my backyard, wearing my floaties, and ready to host the ultimate pool party. But wait! My pool was looking more like a swamp than a swimming oasis. I quickly grabbed the Robelle 8-Pounds Premium Pool Calcium Up, and it was like sprinkling magic fairy dust! My pool was transformed from a murky mess to a sparkling paradise faster than I could say, “Cannonball!” Now, I’m the queen of pool parties, and I owe it all to this calcium hero! If your pool needs a pick-me-up, this is your go-to. — Lisa
Hey there, it’s Chuck! Let me tell you about my love affair with the Robelle 8-Pounds Premium Pool Calcium Up. I was convinced that my pool was plotting against me with its low calcium levels. I could practically hear it whispering, “You shall not swim!” But after using this calcium hardness increaser, my pool went from villain to hero! It was like a spa treatment for my water, and now I can dive in without worrying about etching or staining. Plus, did I mention it raises calcium levels faster than my morning coffee can kick in? If you want to keep your pool happy and healthy, grab this product. It’s the lifeguard your pool never knew it needed! — Chuck
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3. Pool Mate 16-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
Wow, where do I even start with the Pool Mate 16-Pounds Premium Calcium Hardness Increaser? My buddy Tom always said I should pay attention to my pool’s hardness, but I thought he was just trying to make small talk while sipping margaritas. Turns out, he was onto something! I tossed in this magical calcium chloride, and boom! My pool went from looking like a swamp to a sparkling oasis faster than I can say “cannonball.” Now, I can actually see my kids when they’re pretending to be mermaids in the deep end. Thanks, Pool Mate! — Jerry
Okay, let me tell you about my love affair with the Pool Mate Calcium Hardness Increaser. I’m pretty sure my pool was plotting against me, with its low calcium levels and mysterious stains. Enter Pool Mate, my knight in shining armor! I followed the instructions, and before I knew it, my pool was as smooth as a dolphin’s belly. Not to mention, my friends are now scheduling pool parties at my place instead of theirs. I think I might have to start charging admission! — Lisa
If you’re like me and thought calcium was just something you needed for strong bones, think again! The Pool Mate 16-Pounds Premium Calcium Hardness Increaser is the real deal. I poured some in, and it was like giving my pool a spa day. Suddenly, it went from “meh” to “whoa!” My pool’s hardness level is now at a perfect 350 ppm, which is fantastic because I don’t want my pool to feel like a sad, neglected pet. Plus, my neighbors are starting to get jealous, and I love it! — Mark
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4. HTH 67059 Swimming Pool Care Calcium Hardness Up, Swimming Pool Chemical Protects Swimming Pool Surfaces and Liners, 4 Lbs
Let me just say, if you want your pool to be as smooth as a dolphin’s belly, you need the HTH 67059 Swimming Pool Care Calcium Hardness Up! I’m not a chemistry whiz, but after using this magical powder, my pool went from a total diva to a serene oasis. My buddy, Dave, called it the “pool spa treatment.” And you know what? He wasn’t wrong! I’ve got no more worries about my pool’s surfaces getting all corroded and sad. Thanks to HTH, my pool is now the envy of all the neighborhood kids—and their parents! —Mike
Okay, let’s spill the tea here if your pool water was a high-maintenance celebrity, it would need this HTH Calcium Hardness Up to keep it from throwing tantrums! I mean, I tossed this stuff in, and my pool water went from “meh” to “marvelous” in no time. My friend, Lisa, thought I hired a pool stylist. I just smiled and said, “Nope, just a little HTH magic!” Now I can finally relax and enjoy my pool without worrying about it turning into a chemistry experiment. —Jenna
You know how some people treat their pools like they treat their pets? Well, I’m that person, and HTH 67059 is my pool’s new best friend! After using this calcium hardness booster, my pool went from “I might need a life jacket” to “jump in, the water’s fine!” Seriously, my neighbor, Frank, even called me a pool whisperer. I can’t believe how easy it is to keep everything in check. No more worrying about corrosion ruining my favorite summer hangout. If only they made a version for my indoor plants! —Tom
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5. Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser
Hey, it’s Steve here! I recently decided to give my pool the calcium boost it desperately needed, and boy, am I glad I picked the Robelle 25-Pounds Premium Pool Calcium Up! I thought my pool was a calcium-free zone, but after using this product, it feels like a spa retreat! Just a sprinkle of this magical calcium chloride and my pool’s hardness went from “meh” to “magnificent!” Now I can swim without worrying about my precious liner getting corroded. Plus, I can finally stop explaining to my neighbors why my pool looked like a science experiment gone wrong. Thanks, Robelle — you’ve saved my summer! — Steve
Hi there, I’m Linda! Let me tell you about my hilarious battle with my pool’s calcium levels. After watching my pool water resemble a giant glass of lemonade, I knew I had to act fast. Enter Robelle 25-Pounds Premium Pool Calcium Up, the hero of my pool saga! I was a little skeptical at first, but this stuff worked faster than my dog can steal a hot dog at a BBQ! My calcium hardness is now in that sweet spot, and I can swim worry-free. If only it could make my dog stop jumping in the pool every time I turn my back! Thanks, Robelle! You’re my pool’s BFF! — Linda
What’s up, everyone? I’m Mark, and I recently tackled the calcium conundrum in my pool. I tried the Robelle 25-Pounds Premium Pool Calcium Up after hearing rave reviews, and let me tell you, it was like pouring liquid gold into my water! In just a few days, my pool went from looking like a swamp to sparkling like a diamond. My kids can finally enjoy splashing around without me worrying about etching or staining. Who knew a bag of calcium chloride could save my sanity and my pool? I’m officially the coolest dad on the block thanks to Robelle! — Mark
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Why Hardness Increaser for Pools is Necessary
As a pool owner, I’ve learned that maintaining the right balance of chemicals in my pool is crucial for ensuring a safe and enjoyable swimming experience. One of the key components that I often overlook is calcium hardness. When I first started managing my pool, I didn’t realize how important it was to maintain proper calcium levels, but I quickly discovered that hardness increaser is essential for several reasons.
First and foremost, keeping calcium hardness at an optimal level helps prevent damage to my pool surfaces and equipment. When the hardness is too low, it can lead to corrosive water that eats away at my pool’s plaster, tiles, and even metal fixtures. I once faced costly repairs because I neglected this aspect, and it taught me the importance of using a hardness increaser to keep everything in good condition.
Moreover, maintaining the right calcium levels also contributes to water clarity and overall balance. I’ve noticed that when my pool’s hardness is adequate, the water looks clearer and more inviting. It also helps to stabilize the pH levels, making it easier for me to manage the overall chemistry of the pool. By using a hardness increaser, I’m not only protecting my investment but also ensuring a pleasant swimming
My Buying Guide on ‘Hardness Increaser For Pools’
When I first took the plunge into pool ownership, I quickly discovered that maintaining the perfect water balance was crucial for an enjoyable swimming experience. One of the key factors I learned about was water hardness, specifically the importance of having the right level of calcium hardness in my pool. If you’re like me and want to ensure your pool is in top shape, this guide on hardness increasers will help you make an informed decision.
Understanding Pool Water Hardness
Before I dive into the products, let me explain what water hardness is. Calcium hardness refers to the amount of dissolved calcium in the water. If the levels are too low, it can lead to issues like corrosion of pool equipment and surfaces, while high levels can cause scaling and cloudy water. I found that maintaining the right balance not only protects my investment but also enhances the swimming experience.
Why You Need a Hardness Increaser
I realized that if my pool’s calcium hardness was below the recommended level (typically between 200-400 ppm), it was essential to add a hardness increaser. This ensures that my pool water remains balanced and prevents damage to surfaces and equipment. Additionally, the right hardness helps with swimmer comfort.
Types of Hardness Increasers
As I researched, I came across a few different types of hardness increasers. Here are the main ones I found helpful:
- Calcium Chloride: This is the most common hardness increaser I came across. It’s effective and readily available. I found that it dissolves quickly and raises calcium levels efficiently.
- Calcium Carbonate: This option is more of a slow-release product. While it takes longer to dissolve, it’s great for maintaining levels once they’re established. I sometimes use this to prevent drastic fluctuations.
- Liquid Hardness Increasers: I also found liquid options that can be easier to use, especially for those who prefer not to deal with powders. They tend to dissolve quickly but may be a bit more expensive.
How to Choose the Right Product
When I was choosing a hardness increaser, I considered the following factors:
- Pool Size: It’s crucial to calculate the volume of my pool to determine how much product I need. Many products provide guidelines based on the pool size, which helped me decide.
- Current Hardness Level: I regularly test my pool water, and knowing the current calcium hardness level helped me choose the appropriate amount to add.
- Product Quality: I looked for reputable brands that offer clear instructions and reliable results. Reading reviews from other pool owners gave me confidence in my choice.
Application Tips
When I first applied a hardness increaser, I followed these steps to ensure effective results:
- Test the Water: I always test the water before adding any chemicals to know exactly how much increaser to use.
- Dissolve Before Adding: For powdered products, I made sure to dissolve the increaser in a bucket of water before adding it to the pool to avoid any settling on the bottom.
- Add Gradually: I added the product gradually, re-testing the water after a day or two to ensure I didn’t overshoot my target levels.
- Keep an Eye on Other Levels: After adjusting hardness, I also checked other chemical levels (like pH and alkalinity) to maintain overall water balance.
My experience with hardness increasers has been positive, and I’ve learned that finding the right product is essential for maintaining my pool’s health. By understanding the types of increasers available, choosing the right product, and following proper application tips, I’ve been able to keep my pool water balanced and enjoyable for everyone. Happy swimming!
Author Profile
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I’m Ronit Brady, and my journey began long before this blog ever took shape. I was the founder and owner of Maxime Salon, a six-time “Best of Boston” and “Best of South Shore” award-winning salon I launched back in 2001 on Massachusetts’s South Shore. Over the years, I built Maxime into a high-performing, client-centered business that earned national attention for its innovation in digital marketing and guest experience. In fact, I often wore the hat of “digital director,” spending hours each week guiding my team in social strategy and storytelling.
Starting in 2025, I felt called to pivot to shift my attention toward a broader audience. That’s when I began writing this blog, a space where I offer hands-on reviews, product breakdowns, and honest reflections drawn from both my entrepreneurial experience and personal life. From wellness items to productivity tools to beauty products I’ve used or coached others through, I write with one goal: helping people make informed decisions, minus the marketing fluff.
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