I've been writing in regarding not being able to keep my chlorine levels up. I decided to shock my pool which I did on 5-15 8:30pm.
Levels since: 5-16 1:30pm FC=13 5-16 7:45pm FC=13 5-17 11:45am FC=10 5-18 (today) 2:30pm FC=5
I did have swimmers yesterday for the first time-that may make a difference. But should the level drop from 13 to 5 in 2 days? All my other level seem to be stable.