They are growing in 4x4 cocotek block with 2 layers of cocotek mating underneath. The roots have grown down into the mating so I'm not worried. The roots have plenty of space to grow. The plants are now in their 28 day of flowering and i've been tying them down like crazy. Hopefully I can keep up with them until they stop growing and start to ripen.

Thanks for all of your suggestions.