Brown spots on Strawberry Kush

Troubleshooting Diseases
1

I’m getting a lot of brown spots on my leaves.
Started around 3 weeks ago.
I’m growing Strawberry Kush indoors.
LED lighting. .
Foxfarm Ocean Forest soil in 5 gallon pots.
Using FF trio nutrients.
Distilled water With Cal- Mag at 6.5 PH.
Runoff 6.1 PH.
In flower for 4 weeks and 3 days.
Humidity 45%.
I flushed 10 days ago with FF sledgehammer.
Was hoping it would help but actually worse.
Any ideas what the problem is?
How could I fix this?

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2

Looks like leaf Septoria spotting or potassium deficiency

If it’s Septoria then flushing would make it worse because it’s just keeping the moisture high nuff for it to feel at home.

If it’s a lack of potassium then the flush wouldnt of helped either

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3

Thanks for the info.
I have some Potassium I could give it today.
How often do you recommend to feed it?
Once a week?

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4

I just read about leaf Septoria.
Sounds like it’s hard to get rid of.
Would that spread to my other healthy plants?
There are 4 total.

5

I had the same problem, I removed all the effected leaves at week 3 defoliation, kept a great air flow through the canopy and the problem never came back. :grin: hope this helps.

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6

Thank you.
I tried adding Potassium but that didn’t change anything.
I also removed the infected leaves and increased air flow.
That did improve things. It’s still there but getting much better.
I think you are right about airflow.