This is a Sketchup model of an indoor pond with a built in hydroponics trough, which I plan on building this summer.
The pond will be filled up 2" with coral sand, and will be occupied by tadpole shrimp and snails. A water pump located below the pond will pump water to the end of the trough, which will flow along until it falls back into the pond. Bamboo will grow through the four holes on the trough. It's roots, along with some java moss, pebbles, and foam will filter the water as it works it's way down the trough. This way, there is a perfect relationship between the creatures and the plants; the creatures add nutrients to the water as they eat and poo, while the plants filter the water for them.
