FAS-DPD Delayed Pink Results

I have a 12*22 oval Bestway vinyl pool (approx 6k gallons) that I've been running with a SWG since April (I have the smaller SWG, I know, mistake I should have gotten the bigger one but nothing was in stock earlier this year so it is what it is now). Pool gets a lot of direct sunlight basically all day and ambient temps have been over 100F for several weeks with pool water frequently at 89F. Being new to pool maintenance I'm struggling with several things.

Lately I've been struggling to...

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