Not sure what's causing these light brown/to brownish patches. I checked runoff pH and it was high at 7.0/7.1. Have since corrected this with the past couple waterings. Coco Loco is the medium. They did get pretty tall and close to my fans. Was thinking maybe wind burn but really didn't think so. Only really seems to be affecting the top part of the plants. The patches are really dry and crumbly. I'm not over feeding,I keep tabs on ppms. Any insight is greatly appreciated. Almost 6wks into flower. Average temp is 77°, doesnt ever get above 81°. I've got good ventilation. Humidity is 40%. Seems that it's only affecting fan leaves atm but dont want it to continue towards the flowers.
