help please people gnat problem

When watering my plants 10 days ago I noticed gnats black fly , only 1 , 3 so I trapped 1 or 2 with the sticky traps and then I got some gnat off iv used it now several times , not seen anymore about . Before I noticed the gnats I used bio buzz root juice less then 0.5 ml per ltr. Only twice and done 1 foliar spray with bio buzz alga Mic same dosage . My question is my leaves are rusting outwards inwards spots pics attached . Is that the larvae killing my plants I'm an avid grower with bio bizz range never had any props before.
Could do with some advice from my f]2809221[/ATTACH]ellow growers

I have had the little buggers a few times and honestly have not seen any damage caused by them like you have. I have heard that they can if out of control do damage but have yet to see any. Have you tried sharp sand layered on top and underneath pots?

waterdawg said:

I have had the little buggers a few times and honestly have not seen any damage caused by them like you have. I have heard that they can if out of control do damage but have yet to see any. Have you tried sharp sand layered on top and underneath pots?

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Iv not seen them for couple days now only had literally 2 or 3 in the first place I just reported y day roots look nice no bugs . I would never use sand causes to many problems.
The plants were fine only since iv used gnat off is that because iv used root juice. alga Mic on separate waterings
And should just use gnat off on its own just need some solid advice

Does not look like larvae or munchin your plant. Looks to be more of a nute burn of some sort? Maybe caused by the gnat off?

Did you treat with your lights on?

Burns leaves if you spray food or insecticide on your plants under hot lights.

I raise my CFL's two feet for two hours after a foiliar feeding, I have yet to need an insecticide.

Bless,
DZ

Dogenzengi said:

Did you treat with your lights on?

Burns leaves if you spray food or insecticide on your plants under hot lights.

I raise my CFL's two feet for two hours after a foiliar feeding, I have yet to need an insecticide.

Bless,
DZ

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Gnat off is a soil drench not foliar .
But I did give a spray of alga Mic , before I spotted the gnats , turned off my 600 w light and put my 250 CFL on right to the top of the tent , iv just been looking at my girls and I think it might of toasted them abit ,being to hesitant to put the 600 back on , before the leaves was fully dry . Or could it be something to do with the gnat off only been using the 1ml per ltr as stated on the bottle

i let my soil dry out until the plant droops a little, and then i water and they are gone.. they like the moist soil...

Put a small dish near the plant with water, little dawn soap, a little apple cider vinegar. They will be drawn to it and get stuck.

I used sticky straps and covered my pots with plastic. Took a week but they are completely gone.