A low level can result in foaming which is unpleasant but shouldn t harm the liner.
Calcium hardness vinyl liner pools.
High calcium is rarely a problem if other lsi factors are adjusted properly 500ppm calcium hardness is easily managed without scale formation.
For vinyl pools calcium should be between 150 250 ppm.
Calcium hardness ch for vinyl pool liners no one at tfp was mixing anything up.
Truth be known vinyl liner and fiberglass pools are likely to decline faster in a low calcium environment.
It also produces itchy skin.
If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm.
If calcium hardness goes above 400 ppm you will likely see a white flaky crust on the liner and pool equipment.
Calcium hardness is also very important to the chemical balancing of your vinyl liner swimming pool.
It was a guy at a pool store who got it wrong and the poster at tfp knew that tried to explain to the pool store person what a hydrocarbon was i e.
If your pool has a vinyl or fiberglass liner the calcium hardness level should be between 175 parts per million ppm and 225 ppm.