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C99 seedling not doing so well

I am not sure if this is advanced nute burn, or is I am running the nutes too light. I am running AN connoisseur A+B, started out at around 180ppm, then bumped up to around 240, last feeding was at 420, yet my lower leafs are still dying.

Will those loser nodes still grow I had planned on topping them at second node, but those leafs are toast now. If i top just the very tip, so there is plenty of leaf at top, will the lower nodes take off enough to I can retop them at a later point? I am running a scrog, so its important.

Thank You!
 
I'm pretty sure that is nitrogen deficiency when the lower leaves yellow and die like that. Too much usually gives em burnt tips
 

LostTribe

Well-known member
Premium user
nitrogen def normally starts low and climbs as you can see here. What ph are you watering at? 5.7.....ppm 400-600 C99 classically craves Nitrogen I would also like to point out.

Hay Hay Hay!
 
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