no idea what is wrong with this

Only little yellow dots, and only on the bigger fan leaves. No bugs, no idea what's causing it. Anyone have an idea?

strong nutrients

Yeah stop using nutes for a while

Thanks, problem is I have a potassium deficiancy in the top leaves, I guess I'll swap to foliar for that. I was thinking nute burn but it wasn't on the edges so it had me baffled. + rep

Yeah, the lack of edge burning had me a bit confused too

Ok so, not feeding it didn't help. It's not bugs. And it's only on this one plant. It's been over a week since it's last feeding and now it's degraded to this, but only on a few fan leaves. I've gone through a lot of stuff but I'm still stumped.

cranker said:

View attachment 1734880

Ok so, not feeding it didn't help. It's not bugs. And it's only on this one plant. It's been over a week since it's last feeding and now it's degraded to this, but only on a few fan leaves. I've gone through a lot of stuff but I'm still stumped.

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If the few leaves that it is happening on die, would it be that big of an impact on the plant?

If it's only a few leaves don't really worry about it. Go back to feeding normally. Leaves will fall off all the time no matter what you do

BustedParaphernalia said:

If the few leaves that it is happening on die, would it be that big of an impact on the plant?

If it's only a few leaves don't really worry about it. Go back to feeding normally. Leaves will fall off all the time no matter what you do

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Ok, bad wording, it's only gotten this bad on some of the fan leaves. I have a good 6 weeks left on this girl to finish flowering, she's a slow flowerer, heavy sativa. A lot of the smaller leaves are starting to show spots. You can see them under that one on the top right there's some underneath showing signs. If this was 4 weeks from now I'd be fine with it but I don't want the flowering to take a hit from so much leaf damage.

Try feeding normally for a couple days, it could be some sort of deficiency

BustedParaphernalia said:

Try feeding normally for a couple days, it could be some sort of deficiency

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I'm gonna give them a low N nute cocktail at about half strength see what happens

the plant in question is it next to your intake? if so check its not getting hammerd with cold air if so move plant and change angle of intake hope this helps

stephengardener said:

the plant in question is it next to your intake? if so check its not getting hammerd with cold air if so move plant and change angle of intake hope this helps

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Nope. It's a mystery.

Same problem here - exact same - about 5-6 weeks left in flowering - This is where i stand....

Using Roots Organic 707
http://www.aurorainnovations.org/formula_707.html

Clean/ Chlorine free ph'd to 6.5 only adding cal-mag 10ml/gal

The leaves do eventually brown and dry up and fall off. It has not happen to a lot of the leaves but they can be across from ones that are perfectly healthy. I see this kind of progression and i have moved my ph down to 6.3 for two waterings and up to 6.7 for two as well with no luck. If i add additional nutes even at 25% strength you see a dramatic increase in damage to the leaves.....


PROGRESSION I HAVE RECORDED:
Small brown spots with very small yellow border show up on a leaf and stays this way (3-6 days)
Spots have now grown about 30% and continue to 50% increase by final day of this stage (2-4 more days)
These spots seem do go dormant and blotches ( not round spots ) uneven areas of the leaf brown just like nute burn or overwatering (2-4 more days)
Last but not least its like the leaf is chocked off from anything and just drys up and dies in the last day that fast at the end...... (1 day)

Total process is 1 to 2 weeks/ give..take
Im stumped

AND NO I AM NOT OVER WATERING!

I am in 5 gal pots healthy root systems and water about every 3 days or so (2 inches down soil is quite dry before i water - also use the lifting test to confirm if in question)
Room temp lights on 74-77 degrees
Room temp lights off 69-72 degrees

ill try to get a few pics up sooner than later

im sure i have forgotten details but ask if you need the info to help us get this figured out because I CANT LOOSE EM lol they are like family

Sticky rule number 2309239039, don't hijack threads.

TheFaintingGoat said:

Sticky rule number 2309239039, don't hijack threads.

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See this is why i have just been reading for the last two three weeks because when you post you get people that this

I MUST MODERATE THE WORLD! lol settle please