This looks quite cool, mainly because I’m obsessed by Silent Running and want to escape into space where everyone will leave me alone.
It’s an indiegogo project for an aquaculture system that you can put up on your roof… or backyard or whatever. Assuming you have a flat roof. The guy does a TED talk about it here:
… which gives it a little more credibility I think than the indiegogo thing, which seems to come up with unnervingly round numbers. Like 100kg per year as an estimation of fish output – that looks like a number pulled out of thin air to me, but if these guys have experience doing this stuff, then maybe not. It appears they do – website here etc.
Which does seem to be able to generate a reasonable amount of food. For a completely closed system though, you’d need to do more than feed fish effluent back into the plants (if you’re going to eat the plants/fish)… you’d also need to spray human excrement, styrofoam containers, plastic bags, heavy elements and greenhouse gases in a fine drizzle over the whole system. Bring an umbrella.
Balls to that though. I’m going to make a mini one of these with fresh-water crayfish, because most of the ideal fish are illegal in NZ. The best ones anyway – pretty much everything else in the rest of the world is a threat to native wildlife.
Here are a load of really interesting pictures (if you like this sort of thing) off Conceptual Devices, the design partner’s site. This stuff rocks – kindof needs an easily defineable BOM though… so it can be like the reprap of DIY food.