No flower autos

Hi, first post here! New first medical MJ grow. 3 autos and look great but no flower. I have the humidity at 31% 78-82 degrees F, 1000 watt LED light. Feeding weekly and on a 20h on 4h off light regimen. Any thoughts? Thank you in advance

How old are they ?

It happens but how old are they? Ive even had autos that wouldnt flower even when switched to 12/12. had to do 11/13.

They are 70 days today. I thought putting them on 24h light schedule it would be ok but since not budding I threw them on a timer. Maybe I’ll do the 12/12 schedule then that might make them bud. Thanks for the idea

Pipefighter said:

How old are they ?

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70 days today...

What ended up happening with these ladies? I have a similar indica auto that is being temperamental