Calcium Hardness Vinyl Pool

If calcium hardness goes above 400 ppm you will likely see a white flaky crust on the liner and pool equipment.

Calcium hardness vinyl pool.

Dip the test strip dip the calcium hardness test strip into the pool water. Fortunately calcium hardness changes rather slowly so a once a month testing and adjustment should be all you need. If your pool has a vinyl or fiberglass liner the calcium hardness level should be between 175 parts per million ppm and 225 ppm. But what it depends on isn t that difficult.

The ideal reading for calcium hardness in pool water is about 200 to 400 parts per million. Calcium for a liner pool can be a bit lower than a plaster pool in the range of 150 250 ppm. A low level can result in foaming which is unpleasant but shouldn t harm the liner. If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm.