Thanks everyone. Don't know when I will do another one. I had one person at school tell me they will hire me to do one for them. I designed and built the waterfall. My husband said he wished he could help but he has no idea how to do it. I laughed and said neither do I, I am making this up as I go. LOL Look at pics, watch videos, talk to people on this forum, read books, and if possible check out other waterfalls at businesses, parks, where ever to get examples. Then be prepared to change your mind at every step you take.