Background - new house/pool so trying to get a handle on chemistry. been here 3 months. Current testing
FC - 4.9
TC - 4.9
PH - 7.9
CH - 216
CA - 34 (it just rained like heck for 3 days so its a little low)
Phosphates 2100 Was as high as 2900ppb
I have tried two different...