After about a week of SLAMming the pool, things began to clear up, little by little. Yesterday the pool was very clear, so I did an OCLT.
The FC was 10.0 ppm at about 10:30PM. (I had not added any shock for several hours prior.)
At about 8:30 am before any sun hit the pool, the FC was at 12.0 ppm.
I've only had to do a SLAM once before (2018).
The FC was 10.0 ppm at about 10:30PM. (I had not added any shock for several hours prior.)
At about 8:30 am before any sun hit the pool, the FC was at 12.0 ppm.
I've only had to do a SLAM once before (2018).
Why/how could my FC increase?
Should I do another OCLT tonight?
In the meantime, should I continue to SLAM? (CYA was 40, so I have been SLAMming to 16. Should I retest my CYA?)
Thank you.