I came across Aquaponics a couple of months back and have been planning a system since. With a bit of leeway in resources I decided to get a greenhouse and set up inside it to better control the environment.
I've just received a 4.3m x 2.5m polycarbonate GH and I have several IBC's including one already set up for a FT. I have several GB's I'll be using as well as pipes and pumps etc to get it all working as an AP system.
I'm planning on using a couple of solar panels and deep cycle batteries to power the pumps and maybe heater or lights etc.
Being new to all this I hadn't actually thought much further than the lovely idea of using fish poo to grow healthy fresh plants and clean the water to help grow healthy fresh fish.
I've got a few ideas to trial that I think should help a bit on variation but I must admit I wasn't looking forward to a constant diet of fish and greens even though I do like my fish. I was thinking variety might come from barter with local butchers or even pubs etc.
Among other things I was thinking of using large buckets to grow fruit trees/plants and trimming them for height to keep them GH-sized as a way for increased variety, but I'm not sure yet whether chooks and other livestock would be permitted - unfortunately I'm living in a rental.
I figure to get my AP system working and add in other steps one at a time so as to not fail the system and cause spikes etc. With multiple GB's I was thinking the organics that accumulate in the bottom can be cleaned regularly and used as fertiliser in more prosaic garden systems. The excess herbiage from crops can add to a composting system...
So extending the system to add in more critters is something I approach cautiously but the more I can learn about how a lot of systems inter-relate the more likely it is I can create a much more stable system that might offer an income beyond replacing a good part of the household plate.