fertilizer: Advanced nutriens
Micro , bloom,Grow
Big bud, sensizm ,owerdrive , cal mag
I wash them and also flush them and result ı am so upset pleAse any body hepl me
My first thoughts Looking at the pictures the flash did not cause this problem I would start by checking my PPM runoff. As mentioned looks like nute burn.
Nothing you can do: the light burned the leaves due to ‘lensing’ and will not recover. If spraying plant it’s best to do just before lights out and put a big fan on it. I’m not a big fan of foliar anything except to control pests or fungus.
Plant will survive and it’s a ‘live and learn’ moment.