Yellowing leaves

Patriots781 · Oct 28, 2020

Hey guys I have a 4x4 I got mostly autos most of them are in flower but I have a yellowing problem with my leaves and I cant figure out what it's from I'm starting to think it's too much light I got a new high watt led 780 watts from Wall ive been cutting the power back a little but the oldest are about 3 weeks into flower they shouldn't be yellowing this bad I'm using gh with coco I dont think its the nutes because ive been feeding pretty good and the ph has been ok idk what I'm guessing the light any ideas?

bonytang · Oct 28, 2020

nitrogen deficiency. try Revive by advanced nutrients or Repair by cyco.

athlete · Oct 28, 2020

My first thought is pH and/or overfeeding. I'd flush.
Do it quick so they bounce back and hopefully turn those purple/red stems green again, too.

hotrodharley · Oct 29, 2020

Patriots781 said:
Hey guys I have a 4x4 I got mostly autos most of them are in flower but I have a yellowing problem with my leaves and I cant figure out what it's from I'm starting to think it's too much light I got a new high watt led 780 watts from Wall ive been cutting the power back a little but the oldest are about 3 weeks into flower they shouldn't be yellowing this bad I'm using gh with coco I dont think its the nutes because ive been feeding pretty good and the ph has been ok idk what I'm guessing the light any ideas?

Look up “Potassium deficiency in cannabis”

Patriots781 · Oct 31, 2020

My runoff ppm was 1200 and 1100 maybe they were locked out because there only 12 inches at most

Yellowing leaves

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