Update here. I have not started flushing but did water last time with just water and no nutrients. PH of soil is on target. Leaves are continuing to turn. See photo from today. Any advice on where to go with my plan for home stretch. Water with Nutrients or just water? I don’t know if these leaves are experiencing too much i or too little nutrients. Or is it just old age? Only leaves near the top are effected which makes me think maybe too little nutrients if anything. Not making it too the top of plant? Should I trim off large browning leaves?
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Looking good! I think the yellowing of fan leaves near the top, while everything below is still green, can be caused by too much light intensity. At least in my limited experience, like those leaves are forced to work harder and become deficient more quickly than ones that receive less light. At this point I don't think it would hurt to raise the light another 6-8" and see how they respond.
I'd say you're almost done with the "middle third" of flowering, not in the home stretch yet. If you have a feeding regimen, keep it up for at least a couple more weeks. And I wouldn't take off any fan leaves until they are totally brown and crispy, and then cut them off right at the base of the leaf, leaving the stem still attached to the branch. The plant is taking nutrients from them to send to other areas where they are needed, no sense cutting them off until they are totally spent. Good luck!