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Calcium Hardness Increaser – 30lb for Swimming Pools | Fast-Acting 94% Calcium Chloride Formula for Balanced Water & Scale Prevention (30 Pounds)

4.9 (4) Write Review
Free shipping on orders over $29.99

$59.99

$ 31 .99 $31.99

In Stock

1.Size:15 Pounds


About this item

  • Fast-Acting Formula: Quickly increases calcium hardness levels to prevent scaling, etching, and corrosion.
  • 94% Pure Calcium Chloride: High-quality composition for reliable and effective results.
  • Protects Pool Surfaces: Prevents damage to plaster, concrete, and fiberglass caused by low calcium levels.
  • Enhances Water Balance: Maintains optimal water chemistry for a crystal-clear, enjoyable swimming experience.


Keep your swimming pool in top condition with Pooluxe Calcium Hardness Increaser, the ultimate solution for maintaining balanced water chemistry. Specially formulated with 94% Calcium Chloride, this fast-acting product effectively raises calcium hardness levels, protecting your pool surfaces and equipment from damage caused by soft water.


Barbara C.
Reviewed in the United States on March 31, 2025
My calcium level went from 150 to 300 overnight
Brooke P.
Reviewed in the United States on March 26, 2025
Worked well in my spa.
Norma Jean
Reviewed in the United States on April 9, 2025
Hard to get excited over calcium but I appreciated the fast shipping
Sara France
Reviewed in the United States on April 2, 2025
Perfect size for the swim spa