Calcium Hardness In Vinyl Swimming Pools

Calcium hardness is also very important to the chemical balancing of your vinyl liner swimming pool.

Calcium hardness in vinyl swimming pools.

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. If your pool has a vinyl or fiberglass liner the calcium hardness level should be between 175 parts per million ppm and 225 ppm. What is calcium hardness. Truth be known vinyl liner and fiberglass pools are likely to decline faster in a low calcium environment.

Fortunately calcium hardness changes rather slowly so a once a month testing and adjustment should be all you need. Hardness is the measure of how much calcium or calcium carbonate is present in your swimming pool water. Look at the screenshot of our lsi calculator. High calcium is rarely a problem if other lsi factors are adjusted properly 500ppm calcium hardness is easily managed without scale formation.

Calcium is always present in your pool. These are symptoms of swimming pool water that is unbalanced. If calcium hardness goes above 400 ppm you will likely see a white flaky crust on the liner and pool equipment. If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm.

The recommended range is 150 400 ppm parts per million with an often cited stricter range of 200 400 ppm. Calcium for a liner pool can be a bit lower than a plaster pool in the range of 150 250 ppm. But what it depends on isn t that difficult. Although soft water is desirable in everyday home use calcium hardness is necessary in pool water.

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. 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. For vinyl pools calcium should be between 150 250 ppm. If you re faced with a re plastering job on your pool you ll realize.

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. A low level can result in foaming which is unpleasant but shouldn t harm the liner. Dip the test strip dip the calcium hardness test strip into the pool water.