But what it depends on isn t that difficult.
Calcium hardness vinyl pool.
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.
Fortunately calcium hardness changes rather slowly so a once a month testing and adjustment should be all you need.
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.
The ideal reading for calcium hardness in pool water is about 200 to 400 parts per million.
Dip the test strip dip the calcium hardness test strip into the pool water.
If calcium hardness goes above 400 ppm you will likely see a white flaky crust on the liner and pool equipment.