While being popular with lazy people growing vegetables, I believe that it will keep the substrate (soil/coco etc) too wet for optimal cannabis growth and could possibly lead to fungal problems or especially when your plants are flowering, to mould problems in your flowers due to excessive humidity. This is only my opinion, others may have other ideas, but I would suggest to keep growing "hands on" and leave the wicking bed to busy office workers who can't be bothered watering their gardens. Hope this helps,..... Organoman.