Hi i went to the pool store and had my water checked everything was perfect except my calcium.
It was at 130 and they want me to raise it to 200.Should i do it? According to what i read here i think that i'm safe at 130,because i have a inground with i vinel lineing. What worries me is my thermopompe. The pool guy say 130 will corode me coil. He recommends 200 minimum.Is he right?