You have 6 - 7 weeks left, they aren't even close to finished.
Yes. you want 100% darkness.
Yes there is a chance you have nute burn. Need more info, show pics of the damage.
Don't think I flushed before it started budding unfortunately. Also I use GH flora nutes grow micro and bloom. Currently only using micro and bloom for flowering. 4ml micro and 8ml bloom per gallon. I am actually flushing currently have been for 4 days now just in case. Will put normal amount of nutes back in starting Monday.thats what first came to my mind. what kinda ferts are you using? how much etc? did you give it a flush before you started budding?
I believe I haveDoesn't look too good. Hopefully you caught all leaks.
Nice bud pics will post specs soon enoughSomething has gone horrible wrong. I'm assuming you need MORE LIGHT and MORE AIR.
Here are two top buds from a Le Defendu Fruit and Vanilla Kush, both were harvest a few days ago at 61 days from 12/12.
View attachment 2602797View attachment 2602798
Need detailed info of your grow to give any advice.
You didn't have to flush. The problem was clearly not nitrogen deficiency but heat/light stress. Nitrogen deficiency starts at the bottom of the plant.
Nitrogen toxicity does start at the bottom of the plant all the time.