There's some that are like that but not linked together, just bubblers and nutrient changes. You could do a 5 gallon ebb/flow, that would make some monsters in the long run, the two gallon multi-flow does pretty well itself. Then you can just put a couple of airstones in the res.
It sounds like you are trying to construct a DWC grow with a controller bucket, yes this can be done, the purpose is that you have a bucket with no plants in them, so it make the system easier to maintain. All topping off is done in the controller bucket, you change your water through the controller bucket and because this can be kept outside of your actual growing enviroment, It can help control your water temps.
I posted my system and stuff in grow diaries today........ don't mean to hijack but I think I built what yer lookin fer (chews piece of hay contemplatively). This particular system I encorporated my own little twist - an external pump.
It's like a waterfarm... but Bigger... Blacker... Better.