If your Automatic Lady shows some Preflowers its time to cahnge the Light into " Flowering moder. I would recommend you a circle between 18 and 24 Hours with Light.18 is the Minimum and 24 the Max. You can let her run 24/7 but i think everyone needs a Time to Rest a little, a Plant too.I personally give them Most Time 20/4
and some Flowers 22/2 . Check out what is for you / your PLant the Right Lightdosage. Happy growing