Strange Spotted Leaves

Jimdamick

Well-Known Member
Greetings all you fellow wasters of time, just sitting and staring at your screen, probably stoned. I have a leaf problem that started this summer and I am pretty much stumped. It looks like someone took a spray gun, and watered the plants with a mild acid.
It starts with very small blotches of discoloration all over the leaf, like it was sprayed, and then those dots change color to yellow. It affects all the plants in 2 rooms, but not a 3rd. It seems not to cause any big problem, as the spots have been on the plants for up to 8 weeks now, and it really doesn't destroy the leaf, just makes it look sick as shit.
The only thing that I can think of that could cause it, was the high humidity levels this summer combined with the evaporation of the salts from the nutes onto the leaves (recirculating drip). This causes the little droplet burns? These are small rooms (10'x6') pretty much packed, and the salts do build up on the walls (plant leaves?)
I am feeding the same in all 3 rooms, but the 2 with the problem are connected together, and share the same climate. So, any ideas? I really don't think nutes as I am a seasoned player and have used the same formula for years. Does this salt idea sound possible? The photos attached show the stages. Middle leaf really fucked, the one on the left sort of fucked, and the one on the right just starting to be fucked. It is all over the plant, top to bottom, and random levels of damage, meaning 1 leaf is really affected, while the one next to it is hardly. Really weird. Thanks for any advice, and stay stoned my brothers/sisters.DSCN1369.JPG DSCN1373.JPG DSCN1374.JPG DSCN1378.JPG
 

Bugeye

Well-Known Member
Salts don't evaporate so that makes no sense. Spots like that can be pests (think microscopic) or cal/mag. In your case I would guess pests. When I zoom in on the first leaf I see a lot strange black specks. You gotta check out the front and back of your leaves with a 60X scope and see what is going on.
 

Jimdamick

Well-Known Member
Salts don't evaporate so that makes no sense. Spots like that can be pests (think microscopic) or cal/mag. In your case I would guess pests. When I zoom in on the first leaf I see a lot strange black specks. You gotta check out the front and back of your leaves with a 60X scope and see what is going on.
How fucking small are these creatures? I am using a 10x, and there are some BARELY discernable black spots on the bottom of the leaves, no webs, and I can't really tell what I am looking at. So, you think a 60x would be needed to see the bastards? Any idea on what a tiny black speck, not a lot of them, that can do that to a leaf. Thanks for the input
 

vostok

Well-Known Member
The deal is to have a system in place to deal with all bugs regardless of make,

in one foul swoop, only with the more difficult bugs do you really need a propriety tool,

you should indeed possess at least a 30x loup'e or glass, just to check the color of your trics, in most cases black spots are the bugs shit

good luck with this!
 

inhaleindica

Well-Known Member
Pests for sure!!!!! Spider mites or Aphids would do that.Foliar spray Neem Oil with Dr Bonner's castille soap with Peppermint. Do it once every 3-5 days and then weekly.

You can see them with the naked eye if you really look under the leaves. They are tiny like a pin hole. 30x and 60x jewelry's loupe from ebay is what I love to use. 5 bucks on ebay
 

Bugeye

Well-Known Member
How fucking small are these creatures? I am using a 10x, and there are some BARELY discernable black spots on the bottom of the leaves, no webs, and I can't really tell what I am looking at. So, you think a 60x would be needed to see the bastards? Any idea on what a tiny black speck, not a lot of them, that can do that to a leaf. Thanks for the input
Black spots could be fecal matter, but I don't know for sure. Probably not spider mites if you don't see them or webs. Scan underside of leaves for eggs, larva.
 

Jimdamick

Well-Known Member
absolutely not bugs or pests!
id bet its a potassium def
I'm waiting for a 60x lens, then I'll know for sure. I see absolutely no sort of pest at all with a 10x.. The backs of the leaves look almost normal, no chews just these spots on the top of the leaf that grow from a slight discoloration to yellow. I'll look into the potassium def. Thanks
 

Dr. Who

Well-Known Member
Wow......Doesn't look like white fly damage I've seen before. Nor about any bug I've ever seen effect Mj.....Sure don't mean it's not..But you don't see anything under the leaf...at all? kinda kicks bugs to the side. But you know what? Lets ask the Brain...

@Uncle Ben Take look at his first leaf pics would you Ben? Click on it and get a real close look......I've (knock wood) never had this or seen it. Got an answer for us?

THANKS FOR YOUR HELP and IN-PUT UB!

Still, I want to know if the little black speck's wipe off the plant surface - do they? Sure don't look like they will.
If so - Bugs, treat with something terminal like a spino based or Forbid 4F.....Maybe even get out the big gun - Merit 75 (imid)

If not - It's in your feeding watering system. Maybe a virus even......
Gotta ask
pH?
I know what you grow in and what you use so skip that.
How do you clean your system after a run?

Whole plant and both area's effected are connected still keeps us at bugs or disease (what else is there - LOL)

I gotta run......

I'll ask a cpl of others while I'm out

Doc
 

Bugeye

Well-Known Member
im telling you its not pests!
i dont know why people say shit they really have no clue about,it can make a bad situation much worse!
It may not be pests but a close scan can help you rule it out and can provide clues. I'm not sold it is potassium deficiiency as I'd expect to see more yellowing around edges, but I wouldn't rule it out either because I don't know anything about his feeding routine. Except that he has used it for years which makes potassium harder to believe if this is new.

OP - one other thought, are you running an ozone unit anywhere near the grow?
 

Lil green leaves

Well-Known Member
How fucking small are these creatures? I am using a 10x, and there are some BARELY discernable black spots on the bottom of the leaves, no webs, and I can't really tell what I am looking at. So, you think a 60x would be needed to see the bastards? Any idea on what a tiny black speck, not a lot of them, that can do that to a leaf. Thanks for the input
Yes you need a 60x.... I like my 100x .... was only 15$ on Amazon.... looks like mites to me....... I had mites once, not a bad case, went and got 1500 ladybugs for 7.99$ at the local pet shop.... cleaned them mites right up.
 

Jimdamick

Well-Known Member
It may not be pests but a close scan can help you rule it out and can provide clues. I'm not sold it is potassium deficiiency as I'd expect to see more yellowing around edges, but I wouldn't rule it out either because I don't know anything about his feeding routine. Except that he has used it for years which makes potassium harder to believe if this is new.

OP - one other thought, are you running an ozone unit anywhere near the grow?
Well, your not the only one who has said pests, so join the crowd. I have looked at def images, and you made a valid observation that the yellowing would also be around the edges with a potassium def, which is not really the case here. The spots, and I emphasize spots, are all over the leaf, not really at the edges. Thanks for your help Bugeye (nice name)
 
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