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What's the problem with the leaf?

Lardass

New member
Hello can you guys tell what my issue is from this leaf photo?

Thanks!!!
 

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Kind of looks like powdery mold or some other type of fungus not sure though. Is this the only leaf on the plant that had this going on?
 

Lardass

New member
More photos here

More photos here

Kali mist strain 7wk flower Dwc

600w hps was too close so I moved it up 2 weeks ago.

5.8ph
Lucas formula general hydroponics muted

Only the middle leaves what were too close to the light have problems. Outside leaves look green
 

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Lardass

New member
Close ups

Close ups

Same leaf different light
 

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Maple_Flail

Well-known member
Still see a white little pest on the middle finger by the base in the first two pictures.

you could have a calcium deficiency, however i think those white bugs could turn into a much bigger problem,

at 800x600 res on the pic i can't really tell you anything other than i see something foreign
 

Lardass

New member
Back of leaf

Back of leaf

With a loupe looks like tricromes
 

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djimb

Active member
Veteran
My first thought, not looking closely, was mites, but after seeing more photos and the comment that only the leaves that were closest to the light were affected, I'm going to say It's most likely just burn. It also looks like the trichomes are missing on the affected parts of the leaves, which supports heat being the issue, as they would vaporize before the leaf surface burned.

If you looked over several leaves with a loupe and saw no pests or eggs, it's safe to assume there are none. It is possible there's a deficiency in those plants due to the greater rate of metabolism that would be induced by more light, but I think you might have solved the problem by raising the light.

Of course, you should still keep a close eye on new growth, and watch the plants that seem unaffected. If the problem gets worse or spreads, you'll know something else is wrong.
 

superpedro

Member
Veteran
Hi.

First picture, I too thought it was bugs.

What about your climate? Any chance the humidity has been a little bit out of range?
If that happens, they have more trouble dealing with IR and heat in general. If its been too high, it could also explain the necrosis looking like Ca def.

Nice grow besides that :)
 

Lardass

New member
Light and heat stress?

Light and heat stress?

Few more photos. Shes almost done but i have a clone id like to grow and avoid the same problem if it is a nutrient problem.
 

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MrBungle

Active member
it looks like a few problems going on at the same time...


Bugs, perhaps not enough fresh air? abnormal temperature swings? The brown spots look like a P def... a lotta stuff going on
 

stoney917

i Am SoFaKiNg WeTod DiD
Veteran
Lucas and deck don't work great gh crushes in dwc just can't use 6/9 u need the green bottle in true hydro systems... use a 7.5grow 5 micro 2.5 bloom for veg and 2.5 grow 5 micro 7.5 bloom for flower... back ya light off and if there are no bugs should be fine... looks like some bug issues goin on to by the white spots under leaves they may be about to take over the plant... if it's nutes and heat easy fix if it's bugs u in it waist high
 

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