Hey Dude and Scotty,
Longtime listener, first time grow questioner.
This is my runt White Widow. It’s had problems since seedling days. I should have dumped it early but it fought so hard I just couldn’t let go. All of my tent conditions are good, temp and RH well inside desired parameters. Lights are an array of 8 CXB3590s from Timber Grow Lights. All are taking the full spread of Cutting Edge Solutions* nutes plus Recharge and Mammoth P. None of the other 5 plants, 2 White Widow, 2 White Queen and 1 Iced Grapefruit are showing these brown streaks on the leaves. All plants are in 3 gal coco/EWC/perlite hempy buckets. They could be a little root bound due to an extended veg time. I have been fighting a small fungus gnat problem off and on. After adding the FloraFlex drippers, the bug issue has lessened.
Thanks for all you guys do for the grower community!