A few sources of info on Aquaponics
I haven't gotten into aquaponics myself, so I don't have any first hand experience with it. Although I have saved some good information on the subject over time that I can post for anyone interested.
Backyard aquaponics (online magazine)
Backyard aquaponics (first issue 2007 in pdf.)
Backyard Aquaponics Magazine
Aquaponic System - Design Manual
AQUAPONICS - INTEGRATION OF HYDROPONICS WITH AQUACULTURE
AQUAPONICS - INTEGRATION OF HYDROPONICS WITH AQUACULTURE 2 (An extensive list of resources)
Construction of Automatic Bell Siphons for Backyard Aquaponic Systems
Recirculating Aquaculture Tank Production Systems: Aquaponics—Integrating Fish and Plant Culture
Aquaponics Growing Fish and Plants Together
Home Hydroponic Systems
Aquaponic Lynx - Aquaponics Systems, Supplies, Designs, Florida, USA
I've found this to be a valuable resource. I also just did a search on craigslist and found a 275 gallon food safe tote for $85 shipped to my door. Gold . If/when I get the system running i'll post pictures and what not. Catfish seem like the easiest option to start with, so in a month or so we'll see how it goes.