If the roots haven't reached the bottom of the pot within a week, something's wrong. Could mean root rot induced by over watering, soil borne diseases.
Nah...that wasn't it.
Cut hole in pot it and it did have roots to the bottom ...roots all white and normal looking, Their were just none at the bottom drainage holes yet
And it was a big pot...2 gallon to 5 gallon tall boy.
Today it looks amazing again...! Watered yesterday.
Definitely never over watered. I never make that mistake anymore.
EDIT
Talked to the guy I got the clones from and he said it was normal for the way I water them.
I don't overwater but when I do water it's on baby !
Instead of using a gallon of nutes to water I'll use 3 gallons of nutes and get a semi flush in there.
Anyway I guess there is different levels of watering a plant.
No other problems and like usual, today they are arrow straight and happy.
I'm not going to sweat it anymore.
Last plant did the same thing and the end result was Blueberry heaven !