Having a pool in your backyard is a luxury, and regular upkeep will help it stay clean and swimmable. Without proper swimming pool maintenance, you’ll experience issues, like calcium buildup. This problem is known as scaling, and it’s identifiable by a white or whitish-gray appearance along the sides of your pool. The discoloration is unsightly, and it can damage the structure if it’s ignored. Here’s what you should know about the substance.

What to Know About Calcium Buildup in Pools

What causes it?

Calcium is a naturally-occurring mineral that’s always present in water. In pools, it usually becomes excessive if the water’s pH level is too high. Ideally, the level should be between 7.4 and 7.6. Another common cause for scaling is too much evaporation. When the liquid evaporates, it leaves behind calcium and any other minerals in the water.

How does scaling damage a pool?

An excess of calcium will corrode any metal fittings in your pool, like handrails. Depending on the fitting, location, and extent of the damage, the corrosion can create small leaks in the surrounding pieces. While you can easily replace these components, their costs will accumulate over time.

Can I test for calcium in the pool?

Yes. Most store-bought testing kits can check the water’s pH level, and there are more elaborate models that let you determine the bromine content and total alkalinity. If these kits seem too intimidating, start with simple pH test strips. While they won’t reveal the specific amount of calcium, they’ll tell you if the level is higher than 7.6. This task should be performed at least once a week.

How can I prevent calcium from accumulating? 

Keeping the pH level balanced is the best way to prevent excess calcium, so make sure to schedule routine testing and swimming pool maintenance. To address evaporation, install a cover to prevent the sun’s rays from making direct contact with the water.

If you want help keeping calcium buildup at bay, contact the team at Captain Cook Pool & Spa. These professionals have provided Big Island homeowners with reliable swimming pool maintenance for over 40 years. They’ll test your water’s pH, add the necessary chemicals to balance it, and remove any calcium buildup on the structure. View their full list of services online, or call (808) 323-3063 to book a free consultation.