Interesting ColeRobbie. I will have to do more research on that... I know nothing about hydro setups.
Reddeheddefarm- Do you have a website? I'm just more curious about your setup, size farm, etc, etc....
What your doing sounds awesome (to say it lightly). I have a friend in Canada who is an heirloom farmer and grows TONS of amazing produce. She sells to many many restaurants however she has 20 acres or so. To do a fraction of what she does, would be a dream.