I heard that Hemp is far better than corn. Just cant grow it legally. Actually Ron Paul mentioned that bit of info.
That yield for the algae sounds pretty damn good.
Wasn't there a problem with some algea that was so thick on the rivers it was clogging up the pumps or water passages? I read that somewhere some time ago on ummm......ummmm.....sorry, Hotboat :swear. Anyway, it was taking over and choking the other water plants. I didn't look into it too much since living on the salty coast, I don't have this issue.