ScrOG, Is it time to flower?

Hi all, This is my first scrog attempt and I’m still a little confused when to start 12/12.

I hear start when the screen is 40%, 50%, 70%....full. I’m sure It has a lot to do on the strain, which will tell you how much it will stretch, which will tell you how full the screen should be before you go 12/12.

This strain is Blueberry, under a 30” by 36” screen. Screen is 9” above the pots. 400w HSP, on 24 hours a day. Using the Lucas formula at 0-8-16.

Is it time to go 12/12? And if so, should I do the lights off for 36 hours before going to 12/12?

Thanks for any input you can give.

yes go 12/12. No need for anything else.

What the hell took you so long to respond? I posted like 5 min ago...LOL.
Should I have started 12/12 sooner? (thinking of my next grow.
thanks man

Well you will know if you should have started sooner by how well or NOT this grow goes. If you work with clones you can perfect a technique, otherwise it is hit or miss on some things. Your plant will grow tremendously for a few weeks once put into flower, so you will def learn something.