I was at the dollar store in their garden section, and I saw burlap sacks. I started wondering if they would work for air pruning, so I thought I'd ask here for info before buying any. I don't see why not, unless its full of chemicals. I've been veging for a couple months. 1 month or sounder flourescents, 1 month or so under mh 600w. My plants are in 5 gallon pots, I think I want to tranplant once more to avoid root bind before the flip. I'm in 100% coco using Maxigrow/bloom, and a kelp tea I'm making from dried kelp. When I transplant I want to surround the root ball with worm castings instead of coco. Think it'll be okay? Thanks guys! Oh I'm gonna set up my tent when switch to my hps 600w