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Captain Pool Supply

Calcium Hardness Increaser – Protect Your Pool from Corrosion & Surface Damage 20 lbs

Calcium Hardness Increaser – Protect Your Pool from Corrosion & Surface Damage 20 lbs

Regular price $48.99 USD
Regular price Sale price $48.99 USD
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Calcium Hardness Increaser – Protect Your Pool from Corrosion & Surface Damage

 

Low calcium levels can cause more than just water imbalance—they can lead to corrosion of pool equipment, etching of surfaces, and shortened lifespan of your pool finish. Our Calcium Hardness Increaser is a fast-dissolving, easy-to-use solution designed to safely raise calcium hardness levels in pool water to the ideal range.

 

Prevents surface etching and equipment corrosion

 

Helps maintain water balance and overall pool health

 

Compatible with all pool types – plaster, vinyl, fiberglass, saltwater, and chlorine systems

 

Fast-dissolving formula – Won’t cloud water

 

Ideal for soft water areas or after refilling with low-calcium source water

 

 

Recommended Range: 200–400 ppm

Application: Add directly to pool water based on current hardness levels and pool volume. Always test water before and after treatment.

 

Keep your pool in top condition by maintaining proper calcium hardness. This essential step in water chemistry helps ensure a longer-lasting pool, smoother surfaces, and crystal-clear water.

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