Have you read about the OCLT yet?
Pool School - Perform the Overnight FC Loss Test (OCLT)
When your water is clear, it's one of the criteria to meet to end the SLAM. if you end too early, problems can return. This is where the importance of accurate testing comes into play.
You will be truly amazed when this process is done and your water is clearer than you ever imagined it could be!
Read, yes. Done, no, waiting for the test kit.
Tonight, I'm swapping filters to soak the filter that's cleaned the pool out overnight. Tomorrow I'll let run with a clean filter and a clean pool. Then we'll do the OCLT.
OCLT, does pump run or not?