Hellllp!!! why plants NOT budding in 12/12?

I've got Alaskan Ice clones about 3 months old. 8 I did in a hydro setup, 4 I did in hempy pots with perlite/vermiculite. It's supposedly a 9-10 week bud cycle.

I put these all under 12/12 lighting 5 weeks ago. The hempy plants are looking good, stopped vegging, and filling out nicely.

The problem:
All the hydro plants are showing little to no sign of any flowering and still appear to still be in veg state with new fan leaves popping out here and there and the plants still stretching. They look freaking great, but just look like they're still in veg!

All the plants get the same nute mix (hempy and hydro). Temps are a little high (into the 90s) but never had problems with that on other types.

Anyone ever heard of this???? I'm half way through flower and I don't see how this can end well.

Hey smokinfool,

Do you have any light leaks?

If the plant gets light during the darkness period it can prevent flowering. Usually a reoccurring light leak

Any pics too?

Bro get the temps down before they flower, 75 - 80 max or your buds will be stringy ,scruffy ,spindly light crap. Give them another week or 2 to turn, if after that they still arnt flowering then it must be light leaks, or u peeking etc

Always a light leak or sometimes even an led light on a fan.Seen one flower and the one beside her wouldnt.Seal er up Bro.

There could be a small light leak. I just never imagined it could be much more significant than natural moonlight, and never thought there could be an effect from such a small amount of light.

What's got me surprised is why are the ones in the Hempy pots budding and the straight hydro plants are not. They're all sitting in the same space