What type of deficiency or toxicity is this?

Can anyone let me know what they think this is? I am on week 5 of my grow and my plant is looking good. This deficiency/toxicity only happened to the two lowest fan leaves. I’m in ffof and gave first feeding a week ago. Ph of water is 6.5.

Hi, were these leaves actually touching the surface of the grow medium?

Still working on my diagnosing abilities, so take this with a big grain of salt, but based on the other leaves 'basiling' and drooping, my first thought would be over-watering.

Bigboxboys said:

This deficiency/toxicity only happened to the two lowest fan leaves

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literally just ignore it, even if we can narrow down the precise cause, there's no sense in trying to treat it when the rest of the plant looks happy and healthy. Just keep doing what you've been doing, dialing in your grows and your plants will finish.

for what its worth, having grown with FFoF for quite a few years, almost 100% of my plants did this exact thing at some point. I just assumed seedlings that were put into FFoF too soon would get a bit too hot, and this was the result. Other factors def include PH, Cal/Mag and maybe even a little over or under watering.

THT said:

I just assumed seedlings that were put into FFoF too soon would get a bit too hot, and this was the result.

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FWIW this last time I tried FFOF from birth, no soaking in water first or anything.


That was planted 15 days ago.

Edit: Sorry about the color/lighting... didn't really see how blown out the exposure was until I looked at it on the computer screen; on the phone it looked better.

Verrice said:

FWIW this last time I tried FFOF from birth, no soaking in water first or anything.

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ive done the same with mixed results, some strains can take it, others can't