I found a link to a video about hydroponic gardening that does not involve regulated substances,
While a bit long, I thought it was put together pretty well.
There is also a video on line concerning aquaponics (raising fish for food)
http://vimeo.com/15709304
http://vimeo.com/17492855
These are fairly long, the shorter one is about 42 minutes, the other closer to almost two hours, again pretty good stuff. I hope you find it as interesting as I do.
While a bit long, I thought it was put together pretty well.
There is also a video on line concerning aquaponics (raising fish for food)
http://vimeo.com/15709304
http://vimeo.com/17492855
These are fairly long, the shorter one is about 42 minutes, the other closer to almost two hours, again pretty good stuff. I hope you find it as interesting as I do.