Hi
I got your message on my picture. If you follow this link you will be able to make one too.
http://www.**************/2009/07/far...rm-design.html
It's the best combination of explanation around. There's a menu on the right side with other topics, how to make waterfalls is there too. I kept 2 tabs open, one with my farm the other with the instructions. I kept going back and forth. It was a lot less frustrating then my first attempt.
Good luck and I'd love to see how your water turns out. If I can be of any other help just let me know.
Happy Farming
