Malthus, a Meal a Day

Malthus a meal a day.  The water goes in the top, gets filtered through the levels by the plants and then ends up in the bottom for the fishes, and it starts again.  Just a concept right now but this looks really cool.  check out the rest of the website.

Malthus, a Meal a Day. Or How I Learned to Stop Worrying About the Food and Love the Population Bomb. — Conceptual Devices.