Wow, Seattle, it sounds like you should switch to decaf.

That coiling of the hose idea is wacky, and probably won't work like you think, but I got a good laugh about it. The only way that I know to solve the uneven filling problem is to fill them until each is overflowing. That means adding an overflow drain to each bed, and another drain hose. The overflow drain is set higher, so it only drains when the bed is full. Then the pump shuts off, and the rest drains out the low drain.

Rockwool cubes are not best suited for flooding, especially 6 inch cubes. If you simply put the cubes in the beds, and flooded, you would need to flood only a couple of inches, and only once per day.

You can reduce the amount of solution required to flood by putting "spacers" in the bed where you don't have pots/plants. A spacer can be a brick or rock, or a plastic container filled with water, anything that will take up space so less nute solution is needed.

HTH

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