Thanks so much, friends. A great deal of help provided, Appreciate itYou're in the driver's seat now. You learned the tabs/pucks lesson the hard way (high CYA) and now you know liquid chlorine is the best way to chlorinate on a daily basis, not just for the SLAM but afterwards as well. Next spring, if your CYA is low when you open, then you can use tabs for a short while, but only until you see the CYA at a a good level
As for your current situation, blue is good, but crystal clear is even better! Keep focused on the SLAM FC level of 20 and be vigilant with brushing and inspecting all areas of the pool. You'll see the results soon.
I can see the water getting better as it is blue for sure. Today I could see the shadow of the drain which I was not able to for days
I brushed again this AM
My CYA is holding steady at 45/50
However, FC was maybe 19 versus 20 needed. I may have lost 1 PPM overnight. I added half bottle of liquid shock
Is that enough loss or I thought I should have lost more as algae would be attacking FC?