Anybody keep fish in tanks for food

[Aili]

The kids in my local vocational agriculture program grew tilapia in containers last year, and as far as I know were quite successful. They harvested them & ate them at their annual party. Here's a good article, and the second link is a nice pond for them. The larger the body of water, and more plants, the less you'll have to worry about water changes, as the plants will eat the waste & balance the water chemistry. Just be mindful of ammonia spikes caused by over-feeding, or a dead fish not noticed, etc.

http://www.agribusinessweek.com/raising-...-backyard/

http://www.penick.net/digging/?p=3376