Skunk XXL [Timelapse]

As you can see the plants started preflowering mid last week, so now i changed the nutrien solution with preflowering ml/L. Some roots start to appear outside the pot at the base. As you can see the biggest one is higher than the led (shit, i can't make it upper ;( ). I have to think what to do Plants look happy and healthy and have doubled it size last week, from 35 cm to 68 cm Day 46 update - I opened a groww qestion about some marks on leaves. I thought it was nutrient deficency but it seems to be nutrient excess. I have used flash clean from terra aquatica/ghe to remove salt excess at coco. I also observed that it was too dry on some plants so i will add 1 more water period along the day. I will wait 24-30 hours without watering and will change the reservoir to flowering doses. I have taken a few pics with natural light