I'd be interested if anyone has ever heard of this or tried it. Got this via email from my sister, who might be considering trying to market them.
http://www.portablefarms.com/index.phpIn Less Than 5 Minutes a Day, You Can Grow Your Own
Organic Vegetables and Home-Grown Fish For Your Family
Portable Farms LLC has received interest from 124 countries since our official launch on June 17, 2008. In these unsure economic times, a Portable Farm™ offers people a simple way to grow their own food. They can either use the food for their own use, or consider selling the surplus vegetables and fish for extra income. A Portable Farm™ doesn't require soil, and needs only minimal water.
Yearly Production From a Portable Farm™
A 6' x 8' unit produces 400 vegetables and 100 pounds of fish
A 10' x 20' unit produces 1,100 vegetables and 400 pounds of fish
A 20' x 30' unit produces 3,600 vegetables and 1,400 pounds of fish
A 100' x 100' unit produces 60,000 vegetables and 23,000 pounds of fish
Because Portable Farms™ are small and compact, you can put them in your backyard, garage, basement, barn, porch, hoop house, driveway or greenhouse. The fish and vegetables can be grown in sunlight or with grow lights. A Portable Farm™ can be used in very cold or very hot climates and produces healthy vegetables and fish year round. It can also be Solar Powered.
Related article:
http://www3.signonsandiego.com/stories/2008/dec/26/122608escondido-couple-launches-aquaponic/?zIndex=28073Escondido couple launches aquaponic fish- and veggie-farming system