Ca Hardness Testing - Interpretation

[Watermom]

I would trust my own results with the PS233, but it won't hurt to bump the calcium up just a little and will probably give you peace of mind if you do.

[duraleigh]

Since your Ca is not dangerously low, you could use Calcium Hypochlorite for your chlorine source....it will slowly elevate your Ca and it's a pretty cheap source of chlorine