First Photo indoor grow..

[RonnieB]

I'm growing 2 photos right now, they are in 2lb tubs that yogurt containers. They're doing great, already topped them once, when will I need to transplant them again? I don't wanna wait too long and have them get root bound

 

[Trichome farmer]

I'm growing 2 photos right now, they are in 2lb tubs that yogurt containers. They're doing great, already topped them once, when will I need to transplant them again? I don't wanna wait too long and have them get root bound

coco or soil ? also pics always help