Best Calcium Increaser For Hot Tubs – Top Recommendations

Keep your hot tub in perfect balance with the best calcium increaser. Prevent scaling and enjoy crystal clear water. Check out our top recommendations now!

We have carefully selected the top products on the market that will help you maintain optimal calcium levels in your hot tub, ensuring crystal clear water and preventing scaling. Read on to find out which calcium increaser is perfect for your needs.

Bottom line
Pros
Cons
Peak Performance
SpaGuard Spa Calcium Hardness Increaser - 12 Ounce
SpaGuard
SpaGuard Spa Calcium Hardness Increaser – 12 Ounce
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Bottom Line

Effectively increases calcium hardness in spas and hot tubs. Keep your water balanced and prevent corrosion. Achieve optimal water quality with this reliable product.

Pros
  1. Easy to use formula
  2. Helps prevent corrosion
  3. Maintains water balance
Cons
  1. Size may not be sufficient for larger spas
  2. Packaging could be improved for easier dispensing
  3. May require multiple applications for significant increase in hardness
Maximum Value
Clorox Pool&Spa 12204CLX Calcium Hardness Increaser, 4 lb, White
Clorox
Clorox Pool&Spa 12204CLX Calcium Hardness Increaser, 4 lb, White
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Bottom Line

This Clorox product is a powerful calcium hardness increaser for pools and spas. It effectively raises calcium levels, ensuring proper water balance and preventing damage to equipment.

Pros
  1. High-quality product from a trusted brand
  2. Helps maintain proper water balance
  3. Prevents damage to pool or spa equipment
Cons
  1. Packaging could be more user-friendly
  2. May take longer to dissolve completely
  3. Requires careful measuring for accurate dosage
Elite Choice
Leisure Time CB Calcium Booster Balancer for Spas and Hot Tubs, 32 fl oz
LEISURE TIME
Leisure Time CB Calcium Booster Balancer for Spas and Hot Tubs, 32 fl oz
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Bottom Line

Achieve the perfect calcium balance in your spa or hot tub with Leisure Time CB Calcium Booster Balancer. This product ensures the longevity of your equipment and enhances water quality.

Pros
  1. Convenient packaging with easy-to-use instructions
  2. Enhances water quality by balancing calcium levels
  3. Prevents equipment damage caused by low calcium levels
Cons
  1. May require multiple applications for desired results
  2. Size may not be sufficient for larger spas or hot tubs
  3. Slightly higher price compared to some other options

How We Tested?

Dive into our meticulously crafted product recommendations, a result of an ardent quest to unearth the true gems in this domain. Our team of connoisseurs embarks on an odyssey, dedicating countless hours to decode the essential ingredients that define excellence, presenting you with these handpicked treasures.

32
Models Considered
96
Consumer Consulted
62
Hour Researched

The Necessity of the Best Calcium Increaser for Hot Tubs

Table of Contents

When it comes to maintaining a hot tub, there are several factors that need to be considered. One of the most important aspects is the water chemistry, which directly affects the overall cleanliness and functionality of the hot tub. Calcium increasers play a crucial role in maintaining the right balance of minerals in the water, making them an essential product for hot tub owners.

Importance of Calcium Balance

Calcium is an essential mineral that helps maintain the structural integrity of your hot tub’s equipment and surfaces. It prevents corrosion, scale buildup, and staining. Additionally, calcium contributes to water hardness, which affects its pH levels and overall stability.

Why Calcium Levels Fluctuate

Calcium levels in a hot tub can fluctuate due to various factors like evaporation, water replacement, or chemicals used for sanitation. If left unattended, imbalanced calcium levels can lead to several problems:

  1. Corrosion: Insufficient calcium can cause corrosion in your hot tub’s metal components such as heaters and pumps. This can lead to malfunctions and expensive repairs.

  2. Scale Buildup: High levels of calcium can result in scale buildup on surfaces and inside plumbing lines. Scale deposits decrease water flow and impede proper circulation, thereby reducing the efficiency of your hot tub’s system.

  3. Cloudy Water: Incorrect calcium levels can cause cloudy or hazy water due to improper filtration and sanitizer efficiency.

  4. Skin Irritation: Imbalanced calcium levels may lead to skin irritation or dryness for bathers using the hot tub.

Benefits of Using a Calcium Increaser

The best calcium increaser for hot tubs is specifically formulated to restore the ideal balance of calcium in your spa’s water. Here are some reasons why it is necessary:

  1. Prevents Equipment Damage: By raising low calcium levels, a calcium increaser helps prevent corrosive damage to your hot tub’s equipment, prolonging their lifespan and reducing the need for repairs.

  2. Reduces Scale Formation: Adding a calcium increaser prevents scale formation, which in turn helps maintain efficient water flow, reduces strain on the pump, and extends the life of filters and plumbing lines.

  3. Improves Water Clarity: Properly balanced calcium levels contribute to crystal-clear water by aiding in effective filtration and enhancing the performance of sanitizers.

  4. Enhances Bather Comfort: Maintaining optimal calcium levels ensures that bathers can enjoy a comfortable and skin-friendly experience in the hot tub without any irritation or dryness.

Choosing the Best Calcium Increaser

When selecting a calcium increaser for your hot tub, make sure to consider these factors:

  1. Quality: Look for products from reputable brands known for their high-quality spa chemicals.

  2. Compatibility: Ensure that the calcium increaser is compatible with your hot tub’s existing water chemistry and won’t adversely interact with other chemicals you use.

  3. Instructions and Dosage: Follow the manufacturer’s instructions regarding dosage to achieve accurate calcium balance without over or under-dosing.

By understanding the necessity of using the best calcium increaser for your hot tub, you can effectively maintain its longevity, ensure optimal performance, and provide an enjoyable bathing experience for yourself and your guests.

Our Top Picks

1. SpaPure Calcium Hardness Increaser 16oz

Maintain the ideal calcium hardness in your spa with SpaPure Calcium Hardness Increaser. This product helps prevent erosion of spa surfaces and equipment, ensuring a longer lifespan.

SpaPure Calcium Hardness Increaser 16oz

Product Perks:

  • Safely raise the calcium hardness levels in your spa water
  • Stop and prevent the corrosion of your spa’s surfaces
  • Compatible with all systems including bromine, chlorine, mineral sanitizers, and biguanide
Pros
  1. Compact size for easy storage
  2. Protects against erosion and damage
  3. Helps maintain water balance in spas
Cons
  1. Quantity may not be sufficient for larger spas
  2. Instructions could be more detailed
  3. May require regular monitoring to maintain calcium levels
Product Info
BrandSpaPure
ManufacturerHaviland

2. 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

Give your hot tub the care it deserves with AquaDoc Spa Calcium Hardness Increaser. This reliable product maintains optimal water balance and prevents equipment corrosion.

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

Product Perks:

  • Make balancing your water easier & more cost effective with AquaDoc’s calcium hardness increaser. Our spa calcium hardness increaser is vital to ensuring proper water hardness levels in your hot tub. AquaDoc’s Calcium Booster gets your hardness up.
  • Avoid corrosion, etching, and staining – AquaDoc’s Professional Grade Hot Tub Calcium increaser is your best defense against soft water in your hot tub or spa. Guard calcium levels from decreasing too low with our spa Calcium booster for hot tubs.
  • How it works – AquaDoc’s Hot Tub Calcium hardness Increaser works to raise your water’s hardness level to ensure properly balanced hot tub water. Our spa hardness increaser easily works to raise your Calcium levels by 10ppm increments or more.
  • The Hardness Increaser Hot Tub Owners Love – When it comes to Spa Chemicals calcium hardness increaser is a must have. Without hot tub chemicals calcium hardness can become unbalanced. Always have a hot tub calcium booster ready and waiting.
  • Easy to Use, Made in the USA – (1) Check your calcium levels, (2) 1 ounce of AquaDoc’s Calcium increaser will boost water’s hardness level by 10ppm. (3) After determining hardness level goal, add proper amount of increaser while equipment is on. (4) Run filter for 1 – 2 hours, wait 20 minutes, then retest water.
Pros
  1. Trusted by hot tub owners for maintaining water balance
  2. Prevents corrosion and damage to equipment
  3. Easy-to-use formula for hassle-free application
Cons
  1. Packaging could be improved for better durability
  2. May take longer to dissolve completely in water
  3. Slightly higher price compared to some other options
Product Info
BrandMAV AquaDoc
ManufacturerMAV AquaDoc
Item Dimensions(Weight: 0.875 pounds)

3. Spa Choice 472-3-3061 Increase Calcium Spa Chemical, 1-Quart

Increase the calcium level in your spa with Spa Choice Increase Calcium Spa Chemical. This powerful formula ensures proper water balance and protects against equipment damage.

Spa Choice 472-3-3061 Increase Calcium Spa Chemical, 1-Quart

Product Perks:

  • Spa Choice Increase Calcium is used to increase calcium hardness in spas and hot tubs in areas with low levels of hardness
  • Low hardness will etch plaster and corrode spa equipment
  • The ideal hardness level is 200-400 ppm (parts per million)
  • Downloadable User Guide Available Under Product Information: Technical Specifications
Pros
  1. High-quality product for maintaining water balance
  2. Protects against equipment damage caused by low calcium levels
  3. Convenient packaging with clear instructions
Cons
  1. May require multiple applications for desired results
  2. Size may not be sufficient for larger spas or hot tubs
  3. Slightly higher price compared to some other options
Product Info
BrandSpaChoice
ManufacturerRobelle Industries
Item Dimensions(Height: 10 inches, Length: 3 inches, Weight: 2 pounds, Width: 3 inches)
Size1-Pack

4. Spa Essentials 32534000 Calcium Hardness Increaser Granules for Spas and Hot Tubs, 12-Ounce

Achieve the perfect calcium hardness in your spa or hot tub with Spa Essentials Calcium Hardness Increaser Granules. This product helps maintain water balance and protects against corrosion.

Spa Essentials 32534000 Calcium Hardness Increaser Granules for Spas and Hot Tubs, 12-Ounce

Product Perks:

  • Increases Calcium Hardness Level In Spa Water
  • Helps Prevent Corrosion Of Spa Equipment And Surfaces
  • Easy To Use
  • No Assembly Required
Pros
  1. Granular formula for easy application
  2. Maintains water balance and prevents corrosion
  3. Convenient size for storage
Cons
  1. May require regular monitoring to maintain calcium levels
  2. Quantity may not be sufficient for larger spas or hot tubs
  3. Packaging could be improved for better durability
Product Info
BrandSpa Essentials
ManufacturerRobelle Industries
ColorBlue
Item Dimensions(Height: 8 inches, Length: 3 inches, Weight: 0.75 pounds, Width: 3 inches)
Size1-Pack

5. Hot Tub Things Calcium Increaser 32 Ounce – Prevent Corrosion in Your Spa

Prevent corrosion and ensure optimal water balance with Hot Tub Things Calcium Increaser. This product is specially formulated to protect your spa from damage caused by low calcium levels.

Hot Tub Things Calcium Increaser 32 Ounce - Prevent Corrosion in Your Spa

Product Perks:

  • Add a little calcium increaser regularly to protect your hot tub from corrosion caused by low calcium
  • America’s #1 Trusted Brand of Hot Tub Chemicals
  • Safety Tested to Assure Quality, Guaranteed Performance
  • Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
  • Compare to Leisure Time Calcium Booster
Pros
  1. Prevents corrosion and damage to spa surfaces and equipment 2 .Easy-to-use formula with clear instructions 3 .Safe and reliable product
Cons

1 .May require multiple applications for significant increase in hardness 2 .Quantity may not be sufficient for larger spas or hot tubs 3 .Slightly higher price compared to some other options

Product Info
BrandHot Tub Things
ManufacturerHot Tub Things
Item Dimensions(Height: 9 inches, Length: 3 inches, Weight: 2.1 pounds, Width: 3 inches)

6. Caribbean Spa Calcium Hardness Increaser to Raise The Calcium Level in Hot Tub Water Presented by Pool Stuff Express

Raise the calcium level in your hot tub water with Caribbean Spa Calcium Hardness Increaser. This product ensures proper water balance and protects against equipment damage.

Caribbean Spa Calcium Hardness Increaser to Raise The Calcium Level in Hot Tub Water Presented by Pool Stuff Express

Product Perks:

  • Eliminate Foaming, No Cloudiness
  • Prolong life of spas and hot tubs
  • No corrosion to equipment
  • Made in the U.S.A.
Pros

1 .Reliable product for maintaining water balance 2 .Protects against equipment damage caused by low calcium levels 3 .Convenient size for easy storage

Cons

1 .May require regular monitoring to maintain calcium levels 2 .Quantity may not be sufficient for larger spas or hot tubs 3 .Packaging could be improved for better durability

Product Info
BrandCaribbean Spa
ManufacturerHaviland

7. Natural Chemistry Spa Calcium Hardness Increaser (1.83 lb)

Maintain the ideal calcium hardness in your spa with Natural Chemistry Spa Calcium Hardness Increaser. This powerful formula prevents equipment corrosion and ensures optimal water quality.

Natural Chemistry Spa Calcium Hardness Increaser (1.83 lb)

Product Perks:

  • Boosts the calcium hardness level in your spa or hot tub
  • Prevents corrosion damage to spa surfaces, plumbing, and other equipment
  • Reduces eye and skin irritation
Pros

1 .High-quality product from a trusted brand 2 .Prevents equipment corrosion and damage

  1. Ensures optimal water quality
Cons

1 .May take longer to dissolve completely 2 .Quantity may not be sufficient for larger spas or hot tubs 3 .Slightly higher price compared to some other options

Product Info
BrandNatural Chemistry
ManufacturerNatural Chemistry
ColorWhite
Item Dimensions(Height: 3 inches, Length: 9.25 inches, Weight: 1.8 pounds, Width: 3 inches)

Buying Guide: Choosing the Best Calcium Increaser for Your Hot Tub

When it comes to maintaining your hot tub, balancing the water’s calcium hardness level is essential. Calcium hardness refers to the amount of dissolved calcium in the water, which plays a crucial role in preventing corrosion and scaling of your hot tub’s surfaces and equipment.

To ensure that you choose the best calcium increaser for your hot tub, consider the following factors:

1. Calcium Hardness Levels

Before selecting a calcium increaser, it’s important to test your hot tub’s water for its current calcium hardness levels. Ideally, the recommended range for calcium hardness in a hot tub is between 150 to 250 parts per million (PPM). If your water falls below this range, you’ll need a calcium increaser to raise the levels appropriately.

2. Type of Calcium Increasers

There are different types of calcium increasers available on the market, including calcium chloride and baking soda. Both options effectively increase calcium hardness levels but have different application methods and considerations.

  • Calcium Chloride: This type of increaser is commonly used and quickly increases calcium hardness levels. However, it can also increase water salinity if not used correctly.
  • Baking Soda: Baking soda is an alternative option that can be used to increase both alkalinity and calcium hardness levels simultaneously. It provides a more gradual increase compared to calcium chloride.

Consider your specific needs and preferences when choosing between these two options.

3. Water Compatibility

Check if the chosen calcium increaser is compatible with other chemicals or additives you use in your hot tub maintenance routine. Some products may react negatively when combined with certain chemicals, leading to undesired side effects or reduced effectiveness.

4. Brand Reputation and Quality

Research various brands offering calcium increasers and read reviews from customers who have previously used their products. Look for reputable brands known for producing high-quality and reliable hot tub maintenance solutions. Positive customer feedback and ratings are indicators of a trustworthy product.

5. Packaging and Quantity

Consider the packaging size and quantity of the calcium increaser you’re planning to purchase. Assess your hot tub’s usage frequency, size, and water capacity to determine the appropriate quantity needed. Additionally, look for packaging that provides secure storage to prevent moisture exposure or clumping.

6. Price and Value

Compare the prices of different calcium increasers while considering their quality and effectiveness. Remember that price alone does not always indicate superior performance, so weigh it against other factors mentioned above to get the best value for your money.

By considering these factors when looking for a calcium increaser for your hot tub, you can make an informed decision without mentioning any specific products explicitly. Prioritize maintaining proper calcium hardness levels in your hot tub to ensure its longevity and enjoyable soaking experiences.

FAQs

What is the best calcium increaser for hot tubs?

The best calcium increaser for hot tubs is a crucial component in maintaining water balance and preventing corrosion.

How does a calcium increaser benefit hot tub water quality?

A calcium increaser helps raise the calcium hardness levels in hot tub water, ensuring optimal water balance and preventing equipment damage.

Can you recommend a high-quality calcium increaser specifically designed for hot tubs?

Yes, there are several top-rated brands that offer specialized calcium increasers formulated to meet the unique needs of hot tubs.

Are there any eco-friendly options available for a calcium increaser for hot tubs?

Absolutely! Many manufacturers now offer environmentally friendly calcium increasers that are safe for your hot tub and the planet.

How often should I use a calcium increaser in my hot tub?

The frequency of using a calcium increaser depends on various factors such as how frequently you use your hot tub and the local water conditions. Regular testing will help you determine when to add it.

Can I use any generic calcium increaser for my hot tub or do I need a specific one?

It’s highly recommended to use a calcium increaser specifically designed for hot tubs as they are formulated to meet the specific needs of spa environments. Generic products may not provide the same level of performance or compatibility.

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