What is Wrong ?

Oh yeah it's a bug attack , the white little spots makes me thinks of spider mites as I'm actually under attack on my Gorilla Girls in the garden. Check under your leaves , if you can see little spots , small like dust and that are mooving under the leaves then you have a bug attack , according too me could be red spiders / spider mites. I used to use some neem oil to kill them but I'm not anymore and in mid/ late flowering it's not recommended as it could affect the buds. As I'm mostly experimenting that issue with my outdoor grow I can let them without special care as the wind / the heat / the others insectes / the rain are slowly taking care of them so they are there but never too much