m0useanswered grow question 3 years ago That's some very tall growth patterns on that plants main cola.
I think you may need to keep your light closer next grow. Or get a higher output grow light.
Its looking like some potassium deficiencies.
Maybe the soils PH is off or the salts have build up so much its causing a lockout.
The feeding schedule suggests that Big Bloom is to be combined with Grow Big and Tiger bloom.
I'm not seeing any grow big in your feeding plan?
https://foxfarm.com/download/13115/
This is their soil feeding guideline. It looks quite hot though I'd maybe cut this back by 1/2.
Best Of Luck!