do i need to raise my calcium


LifeTime Supporter
Jul 31, 2009
Newnan, Georgia
I went to the pool store today and had them test my water just to compare to my test.They said I needed to add calcium.I thought tat if you had a vinyl liner you didn't have too.But the guy there told me if I didn't the water would leach it and cause wrinkles in our liner.What should I do?Here are my numbers. Thanks
FC 2.5
cc 0
ph 7.5
ta 70
cya 27 this is their reading
ch 40


Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
Houston, Texas
Recommended levels in Pool School say you are good with CH from 50-300 with a vinyl liner. You said you were comparing test results. Did your testing show low CH also? It won't hurt anything for you to raise it a little if it will give you some peace of mind.