Classic too much P too early!
P tox...
At the beginning of bloom. Far too many nutrient lines drop the N too much, and raise the P too much. The stretch still needs that higher N value...
Simple way to fix that problem?
Sure!
Keep feeding the Veg for 2 weeks into bloom after the light time change.
At week 3, go half veg. and half bloom.
At week 4, go full on 100% bloom...
I have not found many strains that will not go at 2 weeks LONGER then breeder reports list. This method will give you nice, healthy green plants. Right out to where they should begin to fade..
Think of P like this.. It's a ripening agent... The more you give, the faster it will "force" the plant to finish...The decrease of N. Makes this even more pronounced.
To actually apply this train of thought.. You should be pretty well versed in growing cannabis..
At this point,, 5 1/2 weeks...You're pretty stuck with where you are... You might increase the N a point, and decrease the P for a cpl weeks to slow the progression down some. If you do this too long, or too much. You will decrease THC concentrations....from the high N..
I guarantee you I'm right on this one....