Yes for that kind of control it must recirculate. I too wanted a big rez but found many setups where the rez would keep buckets topped up but not recirculate and they still have to check each bucket. I have all the fittings for a six bucket setup and a controll rez and full rez but now need a water pump to suck water from each bucket back to main rez and let gravity fill them back from the controll rez. Then i can just check main rez for PPM's and PH. Till then back to work checking each unit.

A search may help find something.
LOC NAR on probation Reviewed by LOC NAR on probation on . From DWC to WaterFarm? Hello, I've been growing in separate DWC buckets for awhile now, and I find that its alot of work controlling each buckets environment individually. Ideally what I want is a 4 or 8 bucket DWC system that connects to a controller reservoir so I don't have to fuss with each bucket individually. I've debated building my own with tutorials from the web, but I do not trust my handy work with a hydroponic system, So it would be much more practical for me to just buy a complete system onlone or Rating: 5