Yellow + Dry + Spots - FFOF Grow w/ Dr Earth Ammend

Arcadios

Member
Hey all! First grow. Not sure what I'm facing with this one. I'm doing 3 gallon pots, tent w/ circulation, watering every other day. In the 7 weeks, I've top amended maybe 2Tbs of dr Earth. You can see the full grow here https://growdiaries.com/diaries/88767-quarter-pounder-autoflowering-critical-kush-auto-amnesia-autoflowering-grow-journal-by-arcadios

I've recently started seeing some yellow leaves come through. I raised my light about a week ago but as best I can tell from searching, the suspect seems to be that the light is still too close. It's currently at 18" in about week 7 of grow, 3 of flower.

Symptom
* Yellowing leaves with brow spots
* Drying leaves towards the end

I also included a magnified photo of the spots. It doesn't look like what I would expect mold to look like.

That said, buds are looking fat and growth seems to be on track!
 

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Arcadios

Member
Heres some extras. As you can see there is -some- yellowing on the other plants, but not as bad as the one in the middle.

pH is typically 6.3 in both watering and runoff.
 

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Marq1340

Well-Known Member
Heres some extras. As you can see there is -some- yellowing on the other plants, but not as bad as the one in the middle.

pH is typically 6.3 in both watering and runoff.
In which week did you amend the soil? Was the yellowing already showing then?
 

Arcadios

Member
In which week did you amend the soil? Was the yellowing already showing then?
I amended on this one in on week 2 of flower, 5 of grow. The one in the middle has had the least top amendments out of them all, because I got what I thought was a bit of burn the first time so I skipped the top amend I did with the other two on week 5.
 

Arcadios

Member
That’s where you messed up. Dry amendments require time to break down in the soil you shouldn’t have skipped a feeding, you should have fed at a lower dose
hmm. I had already been feeding the other ones 1tbs for a 3 gallon pot, even tho the bag said 1 tbs /gal. Are you thinking the yellow I'm seeing is deficiency? It would explain why the others have less yellow. I know FFOF is supposed to be able to carry a lot of the grow so I've been trying not to overdo it with the Dr Earth
 
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Marq1340

Well-Known Member
hmm. I had already been feeding the other ones 1tbs for a 3 gallon pot, even tho the bag said 1 tbs /gal. Are you thinking the yellow I'm seeing is deficiency? It would explain why the others have less yellow. I know FFOF is supposed to be able to carry a lot of the grow so I've been trying not to overdo it with the Dr Earth
Understandable. It does seem like you over thought the feeding process and starved it a little. I've seen at least two amendment style growers mention as long as you don't go overboard then it should only uptake as much as it needs. (Now you must not overfeed it while trying to fix it)

For future reference those specific genetics won't strive off a third of the recommended feeding.
 

Arcadios

Member
Well, today things changed a bit. :p My Amnesia got crispy and more yellow, the Critical Kush got a bit more yellow, and the original plant we discussed stayed about the same, but maybe had a few more leaves go yellow. I'm thinking maybe I just chronically underfeed, except maybe the Amenisa, no idea there.


Video showing the damage over on grow diaries
 

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