These colas are 18-20 inches long and green all the way to the bottom up until recently. They are starting to fade. That is what they are supposed to do as they mature though. No problem with light penetration. That is 12 inches from the bottom Scrog net to the top stabilizer net. They are 6-8 inches over the top net. These are well over waist high bushes. Don’t be scared of leds. The SF-4000s are awesome to grow under as well. I don’t even need a special assigned ac in my veg area most of the year at 50% power. Right now it runs very little and it is hot in my neck of the woods.