Pool Guys Water Hardner – Calcium Chloride

Balance your pool's calcium hardness

PoolChems Water Hardner is calcium chloride designed to increase calcium hardness in swimming pools and help maintain balanced pool water.

When calcium hardness is too low, pool water can become aggressive and may draw calcium from surfaces and equipment. Maintaining the right calcium hardness level helps protect your pool and supports good overall water balance.

Why use PoolChems Water Hardner?

• Increases calcium hardness
• Helps prevent pool water becoming too soft
• Helps protect pool surfaces and equipment
• Supports balanced pool water
• Contains calcium chloride
• Ideal for swimming pool water maintenance

What does Water Hardner do?

PoolChems Water Hardner adds calcium to pool water, increasing its calcium hardness level.

Calcium hardness is an important part of overall pool water balance. If levels are too low, the water can become corrosive or aggressive, potentially affecting plaster, grout, concrete and other pool surfaces and equipment.

Adding calcium chloride when required helps bring calcium hardness back into the recommended range.

When should I use Water Hardner?

Use PoolChems Water Hardner when testing shows that your pool's calcium hardness is too low.

Regularly test your pool water as part of your normal maintenance routine and adjust calcium hardness as required. Always test your water before adding chemicals and follow the recommended dosage for your pool.