ppm question

Some of the big fan leaves are turning yellow..not alot of them, but a few. does that mean they need more? I'll get a picture tonight and post it. I'm on my way to hollywood..what a shit hole that place is.

Overdose and shortage can have similar symptoms.

Most strains will cannibalize the fan leaves during the later stages of flowering. Its no big deal.

My headband eats like A hogg in Veg, but when I go over 1100 ppm in flower she burns and I find that very strange haha I thought that she would be up to atleast 1500 ppm in flower because I was giving her up to 600 ppm in Veg at only 2 weeks old with no burn..