A contractor friend has a customer that wants to build a water feature in the floor of the house. They want plants, and a stream that is in the floor, seen by glass. The glass portion of the floor is approz 6'x20'. I am getting this second hand, but basically I see a glass floor like a glass bottom boat that looks into a stream bed with running water and plants. My friend called me and asked for my advice. I don't see how this can work, and although a big challenge, I would limit total liability in writting. There is basically no way to fix leaks, replace plants or do anything without removing this huge peice of glass. The pump would be outside the house foundation, but still. If the plants live, how do you care for them?. If, after you do everything right, how do you fix a leak? I told her to come here for advice, but I am here asking, is this possible? Oh, we are in Arizona, no basements, or real crawl spaces, just dirt and the foundation.