What To Know About Pool Calcium Buildup

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When I was a kid, I absolutely loved to go swimming. Because I didn’t have a swimming pool, I begged my parents to take me to a neighbor’s house during the hot summer months. Thankfully, my friendly neighbors didn’t mind me coming over in order to swim in their pool. Some of my best childhood memories were made while splashing in this refreshing pool. Do you want to make your kids’ childhoods amazing? Consider hiring a pool contractor to install a beautiful pool in your backyard. Installing a pool on your property will create the perfect space for you and your family to spend quality time at for many years to come. On this blog, I hope you will discover the advantages of hiring a pool contractor to help you make your outdoor dreams a reality.

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What To Know About Pool Calcium Buildup

30 November 2019
 Categories: , Blog


Calcium buildup in your pool appears as a hazy white film that coats pool surfaces wherever water touches. You might see buildup, also called scale, on pool tiles along the water line and cascading over any water feature. Calcium buildup could also be present within filtration system, making it important to remove buildup as soon as you notice it. Here's what to know about taming pool calcium buildup.

Why Does Calcium Form?

Very hard water contains high levels of dissolved mineral solids. These minerals can deposit on surfaces of your pool under certain circumstances. Usually buildup occurs when the water pH is incorrect. The result is a milky white sheen and thick deposits over pool surfaces.

Is Calcium Harmful?

Calcium deposits are not harmful to human health, but they are unsightly and may cause damage to your pool. For instance, buildup on important pool components can make a pool heat less effective, clog filters, and slow down pool circulation. Rough surfaces from buildup can scratch bare feet and inflatable pool toys. Pool water also tends to be cloudier, forcing you to use more chemicals to get crystal clear water.

How Can You Control Calcium?

You can control calcium buildup when you maintain pool pH and alkalinity. Keep alkaline levels between 80-100 ppm, and pH around 7.2-7.4. Another way to prevent scale is to avoid calcium-based sanitizers and pool shocks that add unnecessary calcium to your water.

Consider a partial pool drain to eliminate much of the hard water, and then refill your pool with treated pool water from a service or home water softener. Also, invest in a pool cover if your pool experiences rapid evaporation that leaves deposits behind. Finally, coat your pool tiles with a product designed to inhibit the growth of scale in the first place.

How do You Remove Calcium?

Fortunately, you can remove calcium from your pool tiles with a little hard work. Scrub buildup away with a pumice stone or scale remover. Make sure the pumice stone is wet to prevent scratches on your tile.

For thicker deposits you might need extra help from a muriatic acid product designed to remove scale from pool surfaces. Muriatic acid will not harm your pool water, but make sure you protect your hands, arms, eyes, and face when you use it. Muriatic acid produces fumes and can burn your skin as it dissolves scale.

If you are still unable to prevent scale buildup, contact a professional pool care company to see what they can do for you.