I see. (Maybe)
Does that mean the supply water is gravity fed?
One pump system ?
Sorry, full of questions.
I am trying to put together a closedloop system like yours . When I saw your overhead photo it looked smart.
Was it the bulkhead fitting in your cooler that was leaking? That looks tricky.
You mentioned running the supply line around the perimeter of the tent. If you were to rotate the supply buckets 90° inward and T them opposing, Is it possible to run the supply piggyback atop the return line to save footspace ?
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I guess unless all holes are the same height,,,that ship has already sailed.