I asked this here because i did not find a post about it.
I've been told by TFP not to worry about low calcium hardness
On the WWW it says otherwise can some set me straight on this?
This is what i found:
Swimming pool problems caused by low calcium hardness
Etching of your pool plaster
Pitting of your pool concrete
Dissolve grout in your pool
Pitting of your pool deck surfaces
Staining of your pool surfaces