I don't think rockwool will work for you for that but I'm not sure......good luck.
Weedhound Reviewed by Weedhound on . An idea... could use some advice :] Would it be a good idea to get a container, fill it with a lot of air stones, and submerge rockwool slabs in it entirely? I figured the problem with rockwool is that the roots aren't getting enough oxygen from being so wet all the time. Will post pictures Rating: 5