Leaves edges burnt & curling

Sick Plants & Problems
#1

Hi,

Does this look like something other than heat/light stress? The plants are roughly 3.5 weeks from sprout.

I have a good number of healthy seedlings of various strains running, but these two have shown some stress the past few days. They were in the center, and receiving the most light, so I though it was heat/light related, and I moved them to the edges yesterday. I know it wont fix overnight, but in case I misdiagnosed the problem I figured I’d ask here.

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2 Likes
#2

It looks like a magnesium/potassium issue to me.
Do you know the pH at the root zone?

3 Likes
#3

I do not, I just transplanted them into same size pot but I used plain soil. Roots did look healthy, but it is very possible this batch of soil was too ‘hot’

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#4

What I’m asking is, do you ever check the pH input of your water or values of run-off ?

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#5

Probably under watered

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#6

Agree, but when I see some yellow surrounding the blotches I think more of Potassium … beer3|nullxnull

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#7

Yeah, topsoil looks very dry, give it a good watering perhaps.
Maybe with a pinch of some pink salt.

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