Spotting on leaves not too sure what caused this, advice?

[leblanca]

Hello i am doing an Aeroponic grow and have noticed some spotting on my leaves, especially the older ones, any advice what could be causing this?

Also some discoloration.

 

[Chris Scorpio]

Check for critters with a loup on the underside

 

[Marzbadrock]

I'd say thrips or possibly fungus gnats

 

[captainhowdy]

Certainly looks like infestation as others mentioned to me as well. If there arent any little buggers living under your leaves is it possible you misted the plant with water and put it under your lights?

Good luck mate, ps the more info you can give us the better we can help you.

Stay high my friend
-The Captain

 

[leblanca]

Check for critters with a loup on the underside

I did take a look and there is no critters, im starting to think its a kind of fungus.

 

[leblanca]

Certainly looks like infestation as others mentioned to me as well. If there arent any little buggers living under your leaves is it possible you misted the plant with water and put it under your lights?

Good luck mate, ps the more info you can give us the better we can help you.

Stay high my friend
-The Captain

the leave didnt get water on them since its an aeroponic system, if you would like to see the whole setup check my journal.

 

[Chris Scorpio]

Post all yer info here.... curious what nutes, type of water, pH, etc

 

[captainhowdy]

the leave didnt get water on them since its an aeroponic system, if you would like to see the whole setup check my journal.

Dang, could be yeah. I've heard of people fighting this with a peroxide solution but have no experience with fungus/mildew personally. If it happened to me I think I would toss her. I hope you figure it out my man.

 

[leblanca]

Here is the info of my grow
System aeroponic HPA
PH 5.5-5.8
Nutriment at a TDS of 330
Fertiliser used Emerald harvest 3 part
Using RO water at 0 EC
Im starting to think its psyllium disease... decided to get some 29% peroxide, diluted it to 3% and add 5 ml/gal.

 

[Pennywise]

Raise your ph also, most of us run 5.8-6.2 ph. That first pic looks like bug damage. It doesn’t look like root rot from here. The white discoloring looks like PM. What’s your RH looking like?

 

[leblanca]

Raise your ph also, most of us run 5.8-6.2 ph. That first pic looks like bug damage. It doesn’t look like root rot from here. The white discoloring looks like PM. What’s your RH looking like?

Ok good to know, i had read somewhere to keep ph between 5.5 to 5.8 in early vegetative stage of aeroponic than move to 5.8-6.2 as it enter flowering stage.

My RH is very low, im at 20%.

Here is one of the spot on the leave under microscope

The warlock roots

Tangerine dream roots

Purple bud roots.

 

[Pennywise]

Roots look healthy, no root rot there. The brown color is most likely stain from the nutrients.

 

[leblanca]

Roots look healthy, no root rot there. The brown color is most likely stain from the nutrients.

Ok good to know, i was sure it was root rot since some have the brown stain but the purple bud doesnt have any brown stain, maybe some strain are more retaining the nutriment color.
I keep monitoring the leaves to see if there is any progression of the problem.

 

[Pennywise]

Watch the new growth for healthy leaves. If it spreads we can look closer. The white speckling looks like Thrip or mite damage.

 

[Bush Doctor 77]

Sure looks like mechanical damage(bug jaws) rather than a nute/pH problem. Nice roots!

 

[SmokingWings]

A suggestion. Take a photo, same quality as the ones in the first msg and the 5th msg. Good white lighting like in those photos. But do the underside of one or two leaves, not the top. Not with the microscope; just like the photos in msg 1 & msg 5.

Reason I suggest this is because a month or two ago someone had the same problem, looked identical, but they were positive that there were no mites or other insects seen anywhere, even with a loupe. They posted a quality photo of the underside of their leaf.

One of the group was able to take their photo and run it through their digital darkroom software to enlarge it just enough. He found mites and mite eggs. He circled some mites and some eggs and posted the photo back up and explained what he found and why he knew what they were. I do not remember the name of the thread or who the member was that did the locating of that problem. Last I remember the grower was treating his plants for mites and thought he was winning his battle with the unseen enemy.

Hope this helps. Good luck.

 

[Pennywise]

Some mites are in fact microscopic and can’t be seen by the naked eye.

 

[SmokingWings]

Some mites are in fact microscopic and can’t be seen by the naked eye.

But not the damage.

 

[Pennywise]

The damage is usually obvious

 

[leblanca]

Here is a few pictures i took, after the res change.

Tangerine dream leaves.

Reverse side

Other angle

Otherwise plants looks healthy, dots only visible on older leaves.

Warlock leaves

Underside

Also healthy mostly i would say