Calcium Plus is a chemical product used to increase the calcium hardness of the water. Maintaining the proper calcium hardness level is a critical part of overall pool water chemistry and balance.
Here’s a breakdown of its purpose and function:
- Raising Calcium Hardness: “Calcium Plus” products, typically made of calcium chloride, are used when the pool’s calcium hardness level is too low.
- Preventing Damage to Pool Surfaces: Water that is “soft” (has low calcium hardness) is corrosive. It will actively seek calcium from other sources, which can lead to the etching of plaster, grout, and concrete surfaces, as well as the corrosion of metal parts and equipment.
- Protecting Equipment: Low calcium hardness can also cause damage to the pool’s equipment, such as the heater and pump.
- Improving Bather Comfort: Properly balanced calcium hardness contributes to a more comfortable swimming experience.
- Enhancing Chemical Efficiency: When pool water is properly balanced, other chemicals (like chlorine) can work more effectively, which can reduce maintenance costs.
The ideal range for calcium hardness varies depending on the type of pool surface (e.g., plaster, vinyl, or fiberglass). The product label will provide specific instructions on how much “Calcium Plus” to add to achieve the desired level. It’s important to test the water regularly and follow the manufacturer’s guidelines to maintain the correct balance.








