ive made my own bubbler buckets as well for my mothers! spent bout 30$ total for 4 3gal tubs, we cut holes out of the tops and simply put two mothers in the same bubbler bucket, with 2 foor air stones! the sides are seperated so the roots dont tangle with one-another. but watering is extensive for these big buckets, so we just have to wait till the roots get bigger! do u have any bigger buckets than the one u haave in the pic?