Big Widow Grow w/ Kratky (second grow)

I went out of town for a few days and I came back and these ladies have started to take off. Their roots we doing really well and they are drinking up their nutrient solution. I am probably going to be topping them this coming week, and I think it is almost time to transfer them to the main grow tank. This time I might use a 12 gallon tank instead of an 18 gallon tank so there will be more room in the tent for the ladies and myself.