You answered your question.No idea how it’s overfed. Been flushing for over a week now with straight PH water and before that I was just using organic seasol fertilisers. Look at the old pics. The plant was green and fine. When I started flushing is when the leaves all started changing colour my dude
That, I believe, was his intention. In containers I quit feeding a plant before harvest and just give it water too. I guess that's not flushing though. I just let them use up what is left in the soil. And the plant can use its leaf to finish itself as far as I'm concerned. But the new growth leads me to believe it still had a while to go.You answered your question.
When you decided to “ flush” all you did was strip / leach the soil medium . It does nothing for plant. She was pulling “ any and all “ elements from itself ....... cannibalized . Although I’m not familiar with your fertilizer choices , it stands to reason that your move to flush knocked feeding / uptake out of wack. Starved her out.