I reviewed all your previous posts, but didn't try to knit together what had been going on with previous attempts to SLAM and deal with the issues.
Given the saga - it would be well worth your while to invest the $8 per year in the paid version of PoolMath, Then you can save all of your history of testing and chem additions via the logs, AND we can then see it here also, to give a more complete picture of what has been happening - and avoiding repeated asking about your levels.
I get the sense that the previous attempts have been a bit episodic and the expectation has been for fast results, so SLAM's have perhaps ended prematurely. But even if not, dead algae can persist for much longer than one desires. It may not require more slamming, if one can repeatedly pass the OCLT. But it may take many days of brushing and vacuuming before it all gets flushed out (either by gong to waste or trapped in the filter). It does seem that as time has gone on, you are seeing less and less accumulation - which is good.
So - do those white clouds very easily puff up when disturbed? Then from your past history, the likelihood is it is dead algae that is still slowly settling out.
IF you've been very diligent about keeping your Cl level well in the target range, and still pass an OCLT, then it is just frustrating brushing/vacuuming as needed, that will get better - but longer than you would wish for.
IF you haven't been as up on it (days you just couldn't test, and might have dipped low on Cl), then you might still be having mini-algae blooms during those times, and what you are seeing is the result of the subsequent adds (that kill some of it) to get back up to the target.
As a side note - there are other things that can grow in pools. Most notably a biofilm of bacteria that forms on surfaces. The most common is one that is slightly translucent pink. Very harmless, but a little slimy, and of course not desired. An indicator is the bottom feeling slippery when you walk around in the pool. It forms as a film, and the top layers serve as a "skin" to protect the underlying ones from the chlorine. So even at SLAM levels, it may not be killed. It doesn't grow really fast, like algae can. The treatment for it is super easy - brush the pool every few days. That breaks up the "skin" and then even regular levels of Cl will take care of it. It will not though, dead or alive, accumulate in piles.
