Is my Calcium Hardness too low?


LifeTime Supporter
May 1, 2010
Kingsland, GA
I thought I had soft water, but didn't know how soft. I just did the Calcium Hardness test twice with the TF-100 kit and got a result of 80ppm. My pool is vinyl, but is this too low anyway, and why? Thanks.


Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
Sebring, Florida
No, It's just fine. CH can be too high (400+) in any pool but can only be too low ( roughly 250 or less) in a masonry (gunite) pool.