DAY 49 update:
Thanks for the input. Cal-mag deficiency was the winning answer. Upped the dose to 2tsp/gal and pushed as much thru as they'd take for the past week. Within a few days, the color was looking better. I keep thinking the stretch is over, only to check the next day and raise the light again. Tall girls are 40" and the lst's are 28". Not that I'm really complaining, I'm just anxious to see some buds. Thought I'd be there by now.
Both Criticals are pushing out pistils, NLBB not so much. But everybody eats from the same table, so a few days ago they got a clean water flush, and yesterday their first bloom feed.
Critical 1

Critical 2

NLBB 3

NLBB 4

NLBB 5

NLBB 6
Now the audience participation part: Defoliate.
Yes/no/all things in moderation?
How do we decide what stays and what goes?
I don't want them in therapy, blaming all of life's problems on poor parenting.
Unrelated: round 2 is off to a fair start.
Unsexed skunk/haze, ages 2-3 weeks.

Thanks ahead for your opinions.