Crap...lost the rest of the post...

Well, the little experiment came to an end. The plant in the stacked pot was getting too tall, and I didn't have enough milk crates to put under all the other ladies. (to even-out the canopy) As far as watering , I added nutes from top, and a little while later (10-20 minutes) added a little bit of fresh water to the lower pot. Upon harvest, roots were about 4" to 6" deep into the lower pot, but wound around the edges of the lower pot. Not sure what that infers, but they didn't grow down as much as I expected. Could be something to do with the holes in the upper pot being too small for this technique. (I really wasn't planning on this in the first place, lol)

If you were to prepare and stack all the plants, and you have plenty of vertical space to work with...this might be a good method, but I have decided to try and save for some 7 gallon buckets. Same diameter as the 5 gallon buckets, but much deeper.