Calcium Hardness In Vinyl Swimming Pools

The recommended range is 150 400 ppm parts per million with an often cited stricter range of 200 400 ppm.

Calcium hardness in vinyl swimming pools.

Although soft water is desirable in everyday home use calcium hardness is necessary in pool water. For vinyl pools calcium should be between 150 250 ppm. Calcium hardness is also very important to the chemical balancing of your vinyl liner swimming pool. Hardness is the measure of how much calcium or calcium carbonate is present in your swimming pool water.

But what it depends on isn t that difficult. Calcium is always present in your pool. The ideal reading for calcium hardness in pool water is about 200 to 400 parts per million. These are symptoms of swimming pool water that is unbalanced.

What is calcium hardness. Look at the screenshot of our lsi calculator. With sufficient levels of calcium dissolved the aggressive nature of water is tamed and will help prevent the leaching out of certain substances in pool equipment. In addition to phand total alkalinity calcium hardness must be kept in balance so that your pool water does not become too corrosiveor end up scalingthe surface of your pool.

Truth be known vinyl liner and fiberglass pools are likely to decline faster in a low calcium environment. If a vinyl liner s calcium level is too low this soft water situation could lead to foaming and other water problems and can harm the vinyl. Dip the test strip dip the calcium hardness test strip into the pool water. Low calcium levels in a plaster pool will cause the water to draw calcium directly from the plaster causing it to pit become rough and eventually crumble.

If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm. If your pool has a vinyl or fiberglass liner the calcium hardness level should be between 175 parts per million ppm and 225 ppm. Fortunately calcium hardness changes rather slowly so a once a month testing and adjustment should be all you need. Excessive calcium in a pool is typically the result of an imbalance in your pool water and it can result in white scaly buildup.

A low level can result in foaming which is unpleasant but shouldn t harm the liner. If calcium hardness goes above 400 ppm you will likely see a white flaky crust on the liner and pool equipment. Here s your favorite answer.