Joel provides ready-made fish tanks and grow beds, but he wants to see more Backyard Aquaponics out there if you use stock tanks and regular hydroponic beds, or homemade concrete/wire units.
You can come up with an idea and post it in the forum, and those who've tried something like it and those who've thought of doing it that way will chime in and make suggestions.
Last spring, I held a small benefit plant sale for my friend's cat rescue organization. One man came and bought some plants, and we got to chatting, and he said he was doing regular hydroponics, but the nutrient cost was so high that he was thinking of dropping the whole thing. I asked him if he knew about Backyard Aquaponics (he didn't), and as soon as I explained the fish-poop angle as a main source of nutrients, I saw the light go on by the expression on his face. "That's brilliant!" he said, scrambling to find something to write on. "It makes so much sense, I don't know why I didn't think of it myself!"
If anyone here is actually considering a setup like that, be sure to investigate feeding (at least partially) the fish with homegrown Black Soldier Fly (BSF) larvae. It's easiest if you live in warmer parts of the country, but they are native even in the Seattle area. Last week, I was transferring a compost pile from the abandoned house next door to my garden, and discovered overwintering BSF in the compost.
BSF are non-pests, non-disease-carrying, don't go into houses except accidentally, adults have no mouths, and the larvae eat anything except high-fiber materials like cardboard, paper, grass, straw, etc. One hundred pounds of kitchen or restaurant waste, meat scraps, fish guts, livestock or dog poop turns into approximately 20 pounds of self-harvesting larvae that are high in protein and calcium, great fish food.
Two informative sites:
On-site Recycling of Food Residuals by Dr. Paul Olivier Black Soldier Fly forum (U.S.) Sue