Spotting calcium build up in your pool is simple. Is there a white/grayish ring around the sides of your pool? Does your skin itch when you leave the pool? Or, do your eyes burn or itch while swimming? If you answered “Yes” to any of these you may have calcium build up.
Swimming pool calcium build up is caused by improper pH and calcium. Most water in the United States is hard water. Hard water tends to leave calcium deposits. Cleaning agents can also create water hardness. Keeping calcium buildup in your pool under control means keeping your chemicals balanced.
The 2 Types Of Calcium Buildup:
- Calcium Carbonate – flaky, easier to remove
- Calcium Silicate – Harder to remove (white/gray in color)
Both of these types are caused by a pH imbalance. Calcium build up should always be removed upon first sight. Your pool’s pH should range from 7.4 -7.6. Also, keep your chlorine levels between 2 -3 ppm (especially as the water heats up).
Approaching Calcium Buildup In Your Pool:
- Identify the type of calcium buildup. You will need to identify if your pool has calcium carbonate or calcium silicate. Calcium carbonate is easier to remove. If you have a calcium buildup this would be the one to have. Calcium silicate is a tad harder to eliminate.
- Lower the calcium in the water. The optimal calcium level is 200 – 400 ppm. A high ppm causes deposits on the water’s surface and cloudy pool water. You may have to drain some of the water from your pool and refill.
- Correct your pH levels. Higher pH means your water is basic. You will need to add acid to balance it. On average you should add 1 gallon of acid per 10,000 gallons of water. Be sure to retest your chemicals afterwords.
- Remove the calcium deposits. You can use a pumice stone to scrub off. Please note, always keep the stone wet and test it on your pool surface first. Some surfaces, like fiberglass, will scratch and you will need to use a different scrubbing medium.
- Practice prevention. Maintain a proper chemical balance in your pool. Keep your pH from going basic. This will prevent calcium deposits from increasing.
If you are having problems with calcium build up in your pool contact Cannonball Pool Service today 239.440.9888.