Just a quick question y'all. Just tested the water (per Ben's pool testing kit) and my Calcium Hardness is 60ppm, which is low... BUT, my question... is it really necessary to have the Calcium Hardness up to levels in a vinyl pool ?? Is this really needed to keep the water correct or just important for concrete pools? Thanks in advance.
We're really excited here in SC... pool water is up to 75 degrees... it's swimming time y'all !!

RockG in SC