Do you use any filtration other than the plants in the system in your home? If no, what is the minimum number of 2L bottles(with established plants) you think are needed to support the fish you have? Also, where could a person living in the Detroit area find live tilapia? I don't want to start a project until I have access to all of the materials. Any help would be appreciated, THANKS
Adding to my question I found these interesting articles
http://attra.ncat.org/attra-pub/aquapon ... #resources
http://attra.ncat.org/attra-pub/aquaponic.html#biblio
