FIRST SCROG and GROW need help on the light switch (pics)

Hey guys thanks for all the help that I've already received on here but here is my next obstacle. I have 3 femd THC bombs coming up on week 4.5 of veg. I have one monster who is filling the screen nicely and my other 2 who are the same size that are now just starting to hit the 8" mark where my screen is. They all are still a little crispy for the overnuting last week but making an amazing comeback. How soon should I hit the 12/12 cycle?

EDIT: AND bonus points for whoever can explain to me why my PH in my recirculating hydro setup never stays below 6.0.. it just keeps rising and rising I don't understand it. I do use tap water but is only around the 170-210 range.

I would let them go a little longer maybe another week to fill that screen up some more and to let them recover a bit from the nute burning. I like my screen filled up about 2/3 of the way before I flip the lights. The streach will fill up the rest.

As you read about the scrog method, you begin to notice a familiar trend. Filling the screen to nearly full, then flowering is typically the routine. People mention percentages as to give a general rule of thumb. 60-80% from Indicas to Sativas. Knowing your plant will help in determining this timing. I have yet to hear of a TOO full complaint, only too small a' cab complaints

GL
~Woodsmantoker~

Agreed, when a scrog is done correctly it should be hard to see the framework when you go to 12/12. Until then, you are investing your time in creating a quilt of love. I did so love my scrogs in the beginning. Back in the old uncomplicated soil days lol.

it all depends on the strain and that particular plant, i would wait about a week. ive grown both indicas and sativas, and well i would definately leave more space open for a sativa as to keep training while flowering. im about to start my first scrog soo we shall see how it goes.

Damn Homie! Your burned the shit out of your plants! I woulda just thrown out the whole bunch of them and started all over!

Agreed, burnt but I think they could recover nicely.