This doesn't look like a nitrogen defincy because it doesn't start yellow from the bottom. I am actually not sure what causing this. Ppm is around 800 with ph 6.3-6.5. growing in coco mix. Don't mind all the white stuff, those are just DE. These girl came back from preflowering to revegging. But when that took place in didn't see any deficny. Temp here in cal is roughly around 85+ degree
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I removed most of the yellow. Let hope i correct this issue. I switch the feeding to bloom and upped the ppm to 1400.
ah I see my flaw. These clone are verting back to flowering mode. I guess I have to change the nutrient to flower.
Typically if you're seeing a normal/high PPM but the plant is showing deficiencies then it's either a pH issue or nutrient lockout due to salt buildup. But you have a big plant there and 800 PPM may be considered low for some. So maybe try a heavier feeding next time?
Not sure how to tell if it's salt build up. My 1st time growing outdoor.
Big plant you got there. Might just need more food if the pH is dialed in. Salt buildup?