I'm throwing this out there for discussion, spawned by a recent blog, but something on my mind since first being interested in AP. NO PUMPS. Can it happen, and how?
Why? Well, 'cause if we didn't need pumps or electricity we probably wouldn't use them, and AP might truly join the ranks as a sustainable food production method, and applicable to feeding the poor, saving the world, yada yada...and at the heart of it all, I'm cheap and lazy. I find personal victory in reaching the end goal faster, smarter, easier, cheaper than "how it normally done".
The only thing that comes to mind is a wicking bed of some sort. And I need to consult my book of wild ideas before I open my mouth.
Now I won't be a stickler about including some pumps using waste energy, or some low-tech mechanics, or human power, but try to avoid solar PV and windmill electricity (not that they are not excellent, but they are being done and discussed elsewhere).
link to blog: http://community.theaquaponicsource.com/profiles/blogs/a-no-pump-sy...
Pics, sketches, links, etc are always nice. Happy brainstorming.
Look into ram pumps....