In The Swim Calcium Hardness Increaser
Maintain optimal pool water balance with In The Swim Calcium Hardness Increaser. This 45 lb bucket of granular calcium chloride is essential for preventing corrosion, pitting, and etching of pool surfaces when calcium levels drop below 150 ppm. Keeping your pool's calcium hardness within the ideal range of 180-220 ppm ensures the longevity of surfaces and equipment. It's also effective for melting snow and ice. Remember to monitor levels, as exceeding 400 ppm can lead to scale buildup, impacting water clarity and equipment.
$86.99
Owner Satisfaction
4.4
/ 5
Category Rank
777
/ 1309
#777 in Pool Cleaners & Chemicals
Price vs Category Average
+28%
Above average
Active Ingredient
94
/ Calcium Chloride %
Who it's for
- Protects Pool Infrastructure
- Rapid Dissolution
- Essential LSI Balance
Who should skip it
- Risk of Scaling
- Temporary Water Cloudiness
- Requires Careful Handling
Key Specs
Active Ingredient
Calcium Chloride 94%
Container Size
45 lbs
Product Type
Pool Chemical
Chemical Form
Granular
Recommended Dosage
6 pounds per 10,000 gallons
Ideal Range
180 - 220 ppm
Maximum Level
Below 400 ppm
Manufacturer
In The Swim
Features
- Quickly raises pool calcium hardness levels
- Granular form for fast-acting results
- Prevents surface corrosion and etching
- Maintains essential water quality balance
- Effective for melting snow and ice
- Helps prevent scale buildup
- Protects pool surfaces and equipment
What customers say
Customers highly value this calcium hardness increaser for its reliable performance in balancing pool chemistry. The core strength is its potent ability to quickly raise calcium levels, effectively protecting pool surfaces and equipment from corrosion. Users frequently note that it achieves target hardness with less product than expected, offering excellent value compared to national brands. While the product delivers strong results, some users mention a minor application challenge: it requires slow addition or pre-dissolving to prevent settling on the pool floor. Despite this small hurdle, the overall sentiment is strongly positive, positioning it as a highly recommended staple for routine pool maintenance due to its proven effectiveness.
Still have a question?
Ask Hayley anything about this product before you decide.