Any idea what causes this?

These are a couple leaves from 2 of my plants ( couldn't find any other that have this sort of marking) not sure what causes this at first i thought was the following

1. thrips but couldn't find any anywhere (my IPM contains of a spinosad product so if they were around they may have died)
2. White flies but i couldn't see anything (used a 60x loupe as well underneath affected leaves and saw nothing)
3. Maybe just residue from spraying that didn't dry before i put the lights on or something

Any help is greatly appreciated and if anymore information is needed please go ahead and ask

edit: plants are about 5 weeks old so its possible this happened a while ago and i just didn't notice as well

Hi how are you today? If you put up a picture of the whole thing I would bet on those being lower fans leaves from lower stem nodes towards the bottom - If I am right then no issue is present, they do that naturally as they grow and do not use thoses leaves to produce any longer, I have a good deal of fans dry up at the lower end of plants while they are growing, its natural pruning. Let me know!
Moondance

moondance said:

Hi how are you today? If you put up a picture of the whole thing I would bet on those being lower fans leaves from lower stem nodes towards the bottom - If I am right then no issue is present, they do that naturally as they grow and do not use thoses leaves to produce any longer, I have a good deal of fans dry up at the lower end of plants while they are growing, its natural pruning. Let me know!
Moondance

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The leaves they are from were from the bottom half of the plants if i posted a picture of the entire plant you would not be able to see what i put in my pictures above

explosive82 said:

The leaves they are from were from the bottom half of the plants if i posted a picture of the entire plant you would not be able to see what i put in my pictures above

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yeah it could have bee those thripes.. lil fuckers.. 60x?? nice... if you dont see any eggs. then your golden.. maybe a lil heavy on your nutes. looks like tips are burned,, happy growing.

yeah dude.. you got thrips... pics 1 and 2 def... pic 3 looks like water stains WITH some Thrip action

PIC 2 i can see their poo... little black spots in the silvery shit.

get some Monterey garden spary with spinosad... 2 applications and they're history

The active ingredients in spinosad do break down over time. Maybe the stuff you had with it in it was older.

zubey91 said:

yeah dude.. you got thrips... pics 1 and 2 def... pic 3 looks like water stains WITH some Thrip action

PIC 2 i can see their poo... little black spots in the silvery shit.

get some Monterey garden spary with spinosad... 2 applications and they're history

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Already said in my original post that i had sprayed with spinosad for them

explosive82 said:

Already said in my original post that i had sprayed with spinosad for them

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it will kill thrips... like Tony said.. maybe it was old.... try monterey i know that works ive had thrips twice and that shit works everytime

zubey91 said:

it will kill thrips... like Tony said.. maybe it was old.... try monterey i know that works ive had thrips twice and that shit works everytime

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Yea i've never even seen any live 1s yet how big are they? I only noticed just a very small amount of leaves with this sort of thing on them. I have hot shot pest strips in my garden as well so alot of times i only see dead bugs never alive 1s