this a picture of a work in progress, so don't laugh yet. I have a small pond on top of a burm, and i trimmed an edge away to allow the overflow to run down. I used a small section of pool liner to connect to the lower, larger pond. I've tried so many adhesives between the top pond and the beginning of the liner. It flows really nice, but i am slowly losing water in the junction. and ideas on how to solve this? This will look very different when i'm done. you won't see any hoses at all, and it will be landscaped ofcourse. on the top pond, i found a strange flat rock, that looks like steps. when i run the return hose to the top, i'll run it over that rock, making another waterfall. It's a very small section I'm working with, and this is all material I had laying around.