I think I am aware of what you are talking about. Would it work to elevate your plants/buckets, Run drain lines(1/2 inch tubes) to a low rise resi.( I have a nice 80 gallon that I use) set up a pump on a timer to top feed your plants and let the runoff drain back to the resi? If I am correct you don't have any media?
If that is the case you could either use media (coco/perlite 50/50) and drain out the bottom of the buckets or without media make your drain lines penetrate the bucket at just below the base of your plant.
When the system circulates it will never get above your drain outlet.

Am I explaining it clearly enough?

I suppose it would end up being a recirc system because your bubbler would be in the resi. and you would need fresh water for your roots to float in. If you added media you would only need to water 2-3 times daily.
CaliJay Reviewed by CaliJay on . Zandor or other pro's . combining systems ? lil bk ground info , 8 cell waterfarm sys. , 2/ 1000w. hps w/ 4 cells under each 1000w.hps in cooltubes . tried a single 1000w/ n a light track n it just took tooo long to finish girls w/ lamp always movin . lamps stationary is like the girls are on roids , just explode . my probs. like everyone elses w/ waterfarms is p/h flux , ppm varriance from cell to cell , and roots pluggin up hard airlines in pump coloums that pressurize the drip rings . i have a few physical handicaps and Rating: 5