Help - Green pool but not sure why?

May be pollen or something like that. I would stop with the floc and let your filter do it's job now that it is working the way it should. If it's clearing up hold off on the SLAM and see what happens.
If this clears up without a SLAM, your CYA needs to come up a bunch. 70-80 ppm for your SWG.
 
I had a feeling this was going to be an Algae outbreak. I think if it were mine, I would SLAM it until I passed all three criteria. I think the potential is high that you've barely killed all the Algae, some is till around, and it will juet be waiting to bloom again.
 
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