Ive had the same problem but not since I started giving veg nutes until the flower stretch is over.
Sometime back you told me the same thing I listened to you and stopped with the profit orientated snake oil sales men that are not even half my age and no so much more. I will compare my weed with anyone not what I grew before I came here but what I grow now. I use jacks and what you can buy at wall mart and ace hardware.
My total cost less light bill is under $200 for about 25 plants. It produces about 26 lbs of ruff.
After curing is about16 to 20 lbs of buds. The thing next after the help of cocojoe and Sea and Cap.
Was learning the life cycle of the plant I am growing. For a very long time I used canna GH bunch of Tiger bloom.
But fail to wait till the veg cycle ended and is not always 2 weeks can very from 10 to 18 days.
I also learned that most of the problems were my Idoit mistakes. Biggest mistake was listing to snake oil sales people. You get to week 3 of flower and a rash of signs show up even whole sections of plant just going limp.
Most people add nutrients to fix or the even flush which in the 3rd week after 6 to 10 weeks of heavy over feeding.
Idoit move in anything but coco. Why Idoit move you use PHed water and everything locked in the root ball is freed up and in soil it doesn't flush out unless you live on a lake and have large quanties of h20. Many myself included would try to save the crop. The crop is gone and you have a bad tasting and smelling bunch of bush.
Now between the folks mentioned before and several others I learned.
To this day the White strains are not hard but if your a parent you have to watch more than a kid that just discovered the crawl. GT21 once posted to me in a post of mine and I didn't listen right a way but did an was a big help. It's a weed grow it like one.