NEED HELP FAST! BUBBA KUSH 1st/2nd grow day 19 of flower

In my last post :https://www.rollitup.org/marijuana-plant-problems/557751-1st-2nd-grow-15-days.html

I still have the same problems with the fan leaves but it doesn't seem to get any better it really isn't spreading from what I could tell. I do have a microscope that's x15 zoom and I don't see anything moving as in bugs so I'm really stuck as to what it is??? Can anyone please assist me with this issue I really don't want it to spread or get worse.
 

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you don't need any help, i bet they are just the very bottom leaves that the plant can no longer use efficiently.

it's simply letting them go because they can no longer help the plant, don't worry about it
 
The smaller fan leaves were at the bottom but some of the top growth is looking like that?? So is this normal at 19 days into flower?
 
1150 may be a bit too high for that strain try lowering the ppm to abt 800 to 900 to start and see what happens. some strains can't tolerate such a high ppm.....just my opinion.
 
1150 may be a bit too high for that strain try lowering the ppm to abt 800 to 900 to start and see what happens. some strains can't tolerate such a high ppm.....just my opinion.

I figured it was that but now i know bubba kush's limit.appreciate the reply!!! i guess its nothing to worry about then from what everyone's response figured someone would spot a deficiency if there was one.
 
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