11 Best Calcium Hardness Increasers for Pristine Pools

Discover the best calcium hardness increaser to keep your pool or spa perfectly balanced—quick tips for a clearer, healthier water experience.
11 Best Calcium Hardness Increasers for Pristine Pools

Top Quick Picks For You

Top Money-Saving Choice

SpaGuard

SpaGuard

The SpaGuard Spa Calcium Hardness Increaser is an economical option that effectively prevents equipment corrosion and preserves plaster surfaces, making it a cost-saving choice for maintaining pools.

Best for Fast Results

In The Swim Calcium Hardness Increaser

In The Swim Calcium Hardness Increaser

In The Swim Calcium Hardness Increaser is recognized for its fast-acting formula that quickly raises calcium levels in the pool, delivering immediate results for water balance.

Best for Equipment Protection

Clorox Pool & Spa Calcium Hardness Increaser

Clorox Pool & Spa Calcium Hardness Increaser

Clorox Pool&Spa Calcium Hardness Increaser not only prevents corrosion and etching but also extends the life of pool equipment by maintaining balanced water chemistry.

Best for Pool Longevity

Pool Mate

Pool Mate

Pool Mate's Calcium Hardness Increaser is designed to protect against staining and etching while maintaining ideal calcium levels, ensuring your pool remains in excellent condition over time.

Best Calcium Hardness Increaser

In the serene oasis of your backyard, where shimmering waters beckon and relaxation reigns, the balance of your pool's chemistry is paramount. Calcium hardness increasers play a vital role in maintaining that crystalline clarity, ensuring your aquatic haven remains not only inviting but also safe. Join us as we dive deep into the best options available, empowering you to bring out the true beauty of your home retreat.

Top Money-Saving Choice: SpaGuard

SpaGuard Spa Calcium Hardness Increaser - 12 Ounce
GoodNot So Good
Prevents equipment corrosionDifficult to find retail
Effective for water hardnessNeeds prior dissolution
Good price for performanceRequires more product usage

When it comes to maintaining your pool, we can't recommend the SpaGuard Spa Calcium Hardness Increaser enough !

As our "Top Money-Saving Choice," this handy powder addresses low calcium hardness effectively, preventing equipment corrosion and plaster etching .

With a strong customer rating of 4.7 stars from over 2,500 reviews, it’s clear that many pool owners trust it .

While it may require prior dissolution and a bit more product for optimal results, the low cost for such impactful benefits makes it a standout option .

Dive into hassle-free maintenance and keep your pool sparkling with this affordable gem!

Be sure to also check out the best aluminum engine cleaner for more options! Also, here is the price history so you know exactly when to buy!

Price history for SpaGuard on Amazon

Best for Fast Results: In The Swim Calcium Hardness Increaser

In The Swim Calcium Hardness Increaser for Swimming Pools - Fast-Acting, Scale Prevention - 94% Calcium Chloride - 45 Pounds
GoodNot So Good
Prevents pool damageNot quickly dissolving
Effective at raising hardnessCan cause scaling
Good value for costHeavy weight may require assistance

When it comes to quick fixes for calcium hardness, In The Swim Calcium Hardness Increaser is our standout choice for fast results .

This granular formula effectively boosts calcium levels, preventing pesky issues like erosion and etching of your beloved pool surfaces .

With a recommended dosage of about 6 pounds per 10,000 gallons, you can raise hardness levels swiftly, keeping your water balanced and crystal clear .

However, a word of caution: excessive use can lead to scaling, so always keep an eye on those ppm levels !

Overall, its impressive value and performance make it a reliable addition to your pool care arsenal.

Be sure to also check out the best caulk cleaner for more options! Also, here is the price history so you know exactly when to buy!

Price history for In The Swim Calcium Hardness Increaser on Amazon

Best for Equipment Protection: Clorox Pool & Spa Calcium Hardness Increaser

Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)
GoodNot So Good
Prevents corrosion and stainingOnly for plaster pools
Increases water hardness levelsRequires regular monitoring
Extends equipment lifespanNot the cheapest option

When it comes to protecting your pool, we believe Clorox Pool&Spa Calcium Hardness Increaser is a top contender. This ingenious formula not only prevents corrosion and etching but also extends the life of your pool equipment, ensuring it stays in peak condition .

Imagine a pool free from staining and wear, all while maintaining balanced water chemistry !

With its capability to increase low total hardness levels, you can enjoy a stable swimming environment without the hassle .

Plus, the compatibility with plaster pools makes it a go-to choice in areas with soft water. Like an ace up your sleeve, this product delivers reliable results.

Be sure to also check out the best vacuum concrete floors for more options! Also, here is the price history so you know exactly when to buy!

Price history for Clorox Pool & Spa Calcium Hardness Increaser on Amazon

Best for Pool Longevity: Pool Mate

Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride, Made in USA
GoodNot So Good
Rapid calcium increaseRequires precise measurement
Prevents corrosionMay cause cloudy water
Easy to useLimited dosage instructions

When it comes to maintaining your pool's health, Pool Mate's Calcium Hardness Increaser stands out as our top choice for pool longevity .

This granular product, made from calcium chloride, works wonders by rapidly elevating total hardness, which is crucial for preventing corrosion and etching that can compromise your pool's surface .

With the ideal calcium hardness range of 200 to 400 ppm, a mere 8 ounces can raise levels by 10 ppm per 5,000 gallons, making it straightforward to achieve optimal balance .

While precise measurements are key and it may cloud the water initially, the benefits far outweigh the minor inconveniences, ensuring your pool stays in tip-top shape for years to come.

Be sure to also check out the best aluminum boat cleaner for more options! Also, here is the price history so you know exactly when to buy!

Price history for Pool Mate on Amazon

Pool Mate

Pool Mate 25-Pounds Premium Calcium Hardness Increaser for Pools, 100% Calcium Chloride
GoodNot So Good
Rapid hardness increasePrice can be high
Prevents corrosion and etchingRequires careful dosage
Good price for qualityLimited to pool use

When it comes to maintaining pool health, we highly recommend Pool Mate's Calcium Hardness Increaser .

This granular product utilizes calcium chloride to rapidly elevate total hardness, ensuring your pool remains safe from corrosion and etching .

With just 8 ounces raising calcium hardness 10 ppm per 5,000 gallons, it’s efficient and effective .

We appreciate its sweet spot of an ideal hardness range between 200-400 ppm, which is essential for optimal water quality .

While it requires careful dosing, the benefits far outweigh the drawbacks .

For pool owners looking to avoid water issues and extend the life of their surfaces, this product is a top choice!

Be sure to also check out the best razor blade scraper for more options! Also, here is the price history so you know exactly when to buy!

Price history for Pool Mate on Amazon

Robelle Calcium Increaser

Robelle 2825B Calcium Hardness Increaser for Pools, 25-Pounds
GoodNot So Good
Rapid hardness increasePoor packaging
Prevents corrosionRequires careful measuring
Affordable pricingLimited product volume

When it comes to keeping your pool sparkling and safe, Robelle Calcium Hardness Increaser stands out as a reliable option .

We appreciate its rapidly increases total hardness, making it perfect for maintaining that ideal calcium range of 200 - 400 ppm .

This product doesn't just raise levels; it protects your pool from pesky corrosion and etching, ensuring a longer lifespan for your investment .

However, we did find some challenges with poor packaging and the need for careful measuring .

Overall, if you're looking for an affordable way to tackle low calcium levels, this product is worth considering!

Be sure to also check out the best paint roller cleaner for more options! Also, here is the price history so you know exactly when to buy!

Price history for Robelle Calcium Increaser on Amazon

MAV AquaDoc Calcium Increaser Calcium Hardness Increaser

AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs, Spa Calcium Increaser & Hot Tub Water Hardener Spa Chemicals
GoodNot So Good
Easy to useA little pricey
Works quicklyLimited size options
Prevents corrosionRequires regular monitoring

When it comes to maintaining optimal water quality for your hot tub, AquaDoc's Calcium Hardness Increaser is our top pick .

Balancing calcium levels is a breeze with this professional-grade solution, and it gets your hardness up while protecting against corrosion and etching .

We love how easy to use it is—just a bit of monitoring and you're good to go !

With its ability to raise hardness in 10ppm increments, you can swiftly respond to low calcium levels .

While it’s a tad pricey and comes in limited sizes, the peace of mind it provides makes it worth every ounce.

Be sure to also check out the best undercarriage cleaner for more options! Also, here is the price history so you know exactly when to buy!

Price history for MAV AquaDoc Calcium Increaser on Amazon

SpaGuard

SpaGuard Spa Calcium Hardness Increaser (12 oz) (3 Pack)
GoodNot So Good
Prevents corrosionPoor packaging
Effective calcium increaseLimited product info
Fast shippingMay require more quantity

When it comes to maintaining your pool, SpaGuard Calcium Hardness Increaser is a standout choice .

We love that it effectively prevents corrosion, helping to keep your pool equipment in top shape .

With a handy granular form and a generous 36 ounces, you can easily apply just the right amount .

Plus, the fast shipping means you won't be left waiting long to enjoy crystal-clear water .

While we did notice some complaints about the packaging and limited product info, the overwhelmingly positive feedback, including a solid 4.7-star rating from nearly 1,000 reviews, shows that this product delivers where it counts.

Be sure to also check out the best dielectric grease for more options! Also, here is the price history so you know exactly when to buy!

Price history for SpaGuard on Amazon

Robelle Calcium Increaser

Robelle 2808B Calcium Hardness Increaser for Pools, 8-Pounds
GoodNot So Good
Rapidly increases hardnessRequires dissolution first
Prevents corrosion/etchingMessy packaging
Cost-effective alternativeInitial adding may vary

When it comes to boosting calcium hardness in your pool, the Robelle Calcium Hardness Increaser truly stands out .

We appreciate how it rapidly raises hardness levels, helping to keep your pool in optimal condition between 200 to 400 ppm .

This prevents pesky issues like corrosion and etching, ensuring your stunning oasis stays beautiful .

While the packaging could be tidier, and it's best to dissolve it before use to avoid a mess, its effectiveness outweighs these minor inconveniences .

With just 8 ounces per 5,000 gallons raising hardness by 10 ppm, it’s a smart investment for anyone who values pool maintenance. Dive in and keep your pool sparkling!

Be sure to also check out the best garage accessories for more options! Also, here is the price history so you know exactly when to buy!

Price history for Robelle Calcium Increaser on Amazon

Puri Tech Granular Calcium Calcium Hardness Increaser

Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs - 2 bags of 20lb
GoodNot So Good
High customer ratingHigher price recently
Effective for soft waterPackaging issues
Dissolves quicklyWeight may be cumbersome

When it comes to calcium hardness increasers, this product really shines .

With an impressive 4.8-star rating from 63 customers, it's clear to see that many pool owners trust its effectiveness .

We found it particularly valuable for addressing issues related to soft water, and its ability to dissolve quickly makes it convenient for immediate use .

However, we can’t ignore the fact that the price has crept up recently, and the packaging could use a redesign .

Plus, at 40 pounds, it might be a bit unwieldy for some .

Overall, it’s a solid choice for maintaining optimal water balance!

Be sure to also check out the best razor scraper for more options! Also, here is the price history so you know exactly when to buy!

Price history for Puri Tech Granular Calcium on Amazon

In The Swim pH Increaser

In The Swim pH Increaser for Pools - Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up - 25 Pounds
GoodNot So Good
Effective pH adjustmentCan cause milky water
User-friendly applicationRequires careful dosage
Affordable pricingInfrequent usage needed

When it comes to maintaining a crystal-clear pool, In The Swim pH Increaser is the secret weapon we didn’t know we needed !

This granular powerhouse effortlessly raises total alkalinity and pH levels, correcting those pesky acidic conditions .

We love how it stabilizes pH to prevent the dreaded "pH bounce," ensuring swimmer comfort between 7.2 and 7.6 .

Just remember, a little goes a long way—careful dosage is crucial !

With a solid 4.7-star rating, it’s no surprise this product is a favorite among pool enthusiasts .

Dive into worry-free swimming, but be mindful of the occasional milky water; we’ll gladly take that trade-off for our watery oasis!

Be sure to also check out the best lock deicer for more options! Also, here is the price history so you know exactly when to buy!

Price history for In The Swim pH Increaser on Amazon

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