If there is plenty of both in your res, your doing something,to cause the meristem to not expand the new growth tells you a ton of info if you pay attention.
When you water try not to soak the top,try just watering the medium at the base.
that is a boron and a calcium def notice the tips of the leaves not fully developed ,lack of cell development
Calcium is highest at the leaf tip and new growth and is not mobile .
Looks like they got hot.look yummy tho.
whats the temps been where you are day and night,
And i see blueing and purple .genetics? or cold at night? lack of phos?
Maybe light burn .
Usually on a potash def they become more spindly And targets from the bottom up. .
What was the npk of your feed. Give us a better idea
Looks like they are throwing up.full of nutes that deep into budding .
What was the run off pH and ppm.
Maybe start flushing a week earlier next time.
They look fine,just maybe timing issue on reading the plant.