I've got the Topsy Turvy and the five gallon bucket ones, and they both are doing great! I've got mine hung up high, probably 8 feet up, to get them away from the deer on our property. The rest of our garden is inside of a 9 foot high electric fence. (The deer eat our azaleas in our front flower bed). I'm wondering how far down they grow too, but am pleased so far. I couldn't find the T-T ones quick enough, so I made them out of the buckets. I cut the hole like yours too, but I cut two holes on each bucket and am growing two plants in each one.Good luck and happy gardening!