For vinyl pools calcium should be between 150 250 ppm.
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.
Fortunately calcium hardness changes rather slowly so a once a month testing and adjustment should be all you need.
Calcium for a liner pool can be a bit lower than a plaster pool in the range of 150 250 ppm.
If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm.
Dip the test strip dip the calcium hardness test strip into the pool water.
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 hardness is also very important to the chemical balancing of your vinyl liner swimming pool.