I am growing in a 2' x 4' tray with an ebb and flow set up. I am growing in 4" cubes and 4" x 4" x 2.5" blocks of rockwool. I am thinking of a few solutions for the issue of when the roots become big enough that they may be exposed to light.

I am growing the plants shoulder to shoulder, and right now have about 30 plants with plans to increase to at least 60.

My absolute priority is adaptability. I want to be able to move the plants easily. This is why I like the rockwool blocks. I admit I am worried that roots from one plant will invade the rockwool of another plant because of their close proximity. I have left the wrappers on. Is this still a valid concern?

I am worried that when the roots become large enough, they will be in danger of exposure to light. I am toying with the idea of cutting up a coco mat into 4" squares and placing them under each rockwool block. Would this be effective? Would it help the system in anyway?
rimbaegeus Reviewed by rimbaegeus on . Coco Mat I am growing in a 2' x 4' tray with an ebb and flow set up. I am growing in 4" cubes and 4" x 4" x 2.5" blocks of rockwool. I am thinking of a few solutions for the issue of when the roots become big enough that they may be exposed to light. I am growing the plants shoulder to shoulder, and right now have about 30 plants with plans to increase to at least 60. My absolute priority is adaptability. I want to be able to move the plants easily. This is why I like the rockwool blocks. I Rating: 5