I have been trying to figure this out for the longest time. I have not done any practical experiments and so far just using visualization.

Put simply, for this experiment, we need to circulate (not supply but it can also be that) from a smaller body of water to a larger body of water.

In this example use this:

A 40 gallon tank (any shape or size- within reason) and a 5 gallon tank, place the 5 gallon tank a few inces abouve the 40 gallon, consider 2-3 inches as optimal. Try and get the 5 gallon to recirculate the 40 gallon with minimal mechanical devices ie. pumps but of course you will need at least on small pump (unless you are a REAL genius). The overflow from 5 gallon should be at the very top or just below.

Could you please explain what is the purpose of this?

Just trying to figure out the best way to achieve equilibrium. The idea is to use minimal amount of mechanical devices.

You can use one pump to push or to pull but the 5 gallon cannot run dry (taking into account evaporation) and the 40 gallon cannot overflow. Once this is figured out we can deploy this method on larger scale.

To achieve what? I'm not trying to be making you angry but I just don't understand what it is you are trying to make. What is the end product going to be used for?

To achieve what? I'm not trying to be making you angry but I just don't understand what it is you are trying to make. What is the end product going to be used for?

Why even bother? It's not going to be anything useful anyway.

People have been toying with little ideas like this for 500 years - and got exactly nowhere. The only thing that ever had any practicality at all along those lines were waterclocks.

Why even bother? It's not going to be anything useful anyway.

I want to resume work on some water purification theories.

Are the tanks open or closed?

Open tanks. Oxygenation is of utmost importance, instead of a high waterfall type drop i would like to keep it, for purposes of scale, a few inches which in actuality would be a foot or two but preferably never higher regardless of the size. In the future will be very large, most likely thousands of gallons. In point of fact, we will implement surface agitation in the form of waves or ripples, as seen in nature. Of course now is introduced the dreaded evaporation effect.