How much longer should I veg?

These three og kush #18 are all from clone they have been in these 18 gal (about 13-15 gallons of dirt) pots for coming up on 2 months. They are under a 600 watt cool tube. The dirt is roots original mix with sunshine mix #4. Been feeding them 600-700 ppms of growtek grow, little bit of cal mag, advanced b-52. How much longer should I veg these girls ? I don't want them to get outta control but I will have about 2 1/2 - 3 ft of space to fill above the screen. Any opinions or tips would be great.

If you might have only 2.5 feet left I'd be thinking about pulling the trigger pretty soon. They look healthy and should double in size, maybe even more if they have much sativa in them.

I have never ScROG before.... but i thoguht the idea was to completely fill the screen??? maybe space issues would stop that...?? I thought u just kept pushing it under the screen to keep it even ? I am thinking bout taking this route next time with my grow

Scrog u fill 70-80% of screen then switch

Just measured I have 3 ft of room above the screen that would leave me 1 1/2 ft for the light. I'm just not sure how much she will stretch, the seed mother I grew and flowered had a ph issue and a lot of other problems and it didn't stretch but like 5" lol so I'm not sure if these will.

edit: I have almost 4 1/2 feet from top of screen to top if tent. 1.5 for light and distance from plants ( cooltube is 6" around and I can keep the light 12-15 without problems) and 3' for plant growth above screen. So maybe I should wait till about 90-100 % full?

No way... don't wait that long to flip your plants... Plants will double, some even triple, due to the "stretch" when you flip to 12/12... especially healthy kush's.

So what do you think? Maybe 75-80% full ?

I wish people would learn how to scrog before giving generic answers to specific questions.

Bump! Any suggestions? ANYONE? Here's some picks from today