SpaGuard
SpaGuard Calcium Increaser
Best solution for pool owners looking to prevent equipment corrosion.
Maintain optimal water balance in your spa or pool with SpaGuard Calcium Hardness Increaser. This granular formula effectively raises calcium hardness levels, which is crucial for preventing corrosion and etching of surfaces and equipment. Proper calcium hardness ensures the longevity of your spa and pool components by providing a protective barrier against corrosive water. Easy to use, this increaser helps maintain water clarity and comfort for an enjoyable swimming experience. It is an essential part of regular pool and spa maintenance for all types of water features, safeguarding your investment.
$12.99
Owner Satisfaction
4.5
/ 5
Category Rank
298
/ 1309
#298 in Pool Cleaners & Chemicals
Price vs Category Average
-81%
Below average
Net Contents
12
/ oz
Who it's for
- Spa owners looking to extend equipment lifespan
- Users wanting a quick, residue-free maintenance routine
- Pool maintainers seeking stable, easy-to-manage water chemistry
Who should skip it
- Careless users prone to over-treating their spa water
- Budget-conscious shoppers preferring generic chemical alternatives
- Beginners uncomfortable with frequent, precise water testing
Performance breakdown
Corrosion Prevention
Provides a robust chemical barrier against surface etching and equipment degradation.
Application Ease
Granular consistency allows for quick, mess-free dosing into spa water.
Water Clarity Impact
Effectively stabilizes hardness to prevent cloudy water and unsightly scale buildup.
Chemical Potency
Highly concentrated formula delivers reliable results for consistent water balance.
Equipment Longevity
Protects vital spa components from the harsh effects of imbalanced water.
Formula Solubility
Dissolves efficiently to integrate seamlessly into your existing maintenance routine.
Key Specs
Net Contents
12 oz
SKU
42636BIO
Form
Granular
Purpose
Increases calcium hardness
Benefit
Prevents corrosion of spa components and surfaces
Benefit
Helps prevent scale buildup and cloudy water
Chemical Purpose
pH Balancer
Product Form
Granular
Features
- Prevents corrosion of spa equipment
- Protects spa surfaces from degradation
- Increases calcium hardness for water balance
- Ensures longer lifespan for spa components
- Contributes to a safer spa environment
- Effectively raises calcium hardness levels
- Prevents scale and cloudy water
- Granular formula for easy application
What customers say
Customers overwhelmingly value the SpaGuard Calcium Increaser for its exceptional reliability and ease of use in spa maintenance. The product consistently performs well, effectively raising calcium hardness to protect expensive equipment from corrosion. A major benefit noted is its superior solubility; it dissolves quickly and cleanly without leaving residue or clouding the water, simplifying the maintenance routine. While some consumers find the price point higher than competitors, loyal users consider the cost a worthwhile investment for the guaranteed performance and peace of mind. The consensus is that this trusted product delivers optimal water chemistry and is highly recommended for protecting spa assets.
Know before you buy
Low calcium levels can make your water aggressive, leading to the corrosion of metal components and the etching of spa surfaces. Maintaining the correct hardness level creates a protective barrier that preserves your equipment and extends the life of your spa.
You should test your water using a reliable test kit or strips. If your calcium hardness level falls below the recommended range—typically 150 to 250 ppm for spas—you will need to add this product to restore balance.
No, this product is designed to prevent those issues. By properly balancing your water chemistry, it helps maintain clarity and prevents the mineral imbalances that often lead to scale formation.
For best results, broadcast the granules across the surface of the water while the pump is running to ensure even distribution. Always refer to the product label for specific dosage instructions based on your spa's total water volume.
Yes, SpaGuard Calcium Increaser is effective for both pools and spas. It is formulated to protect surfaces and equipment in any water feature where calcium levels need to be raised to prevent corrosion.
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