Like the thread title says, i'm growing in a 4 x 4 flood and drain tray. My question is what type of grow pot would you recommend while they are in the tray? what are my options? From what i have seen the only possibilities are cocotek baskets, or rockwool (which is way too expensive and doesn't make sense) . So what should i do? go with the coco tek pots? that way at least i will be able to use organic soil / mix and not just all rockwool. Anyways i'm really looking for suggestions, thanks for the help!