It's great to meet folks with a common interest. Thanks for making this site possible. I live in north central Florida and have been a water garden enthusiast for about 6 years. I had my 18X36 foot swimming pool demolished and replaced by my current pond complete with waterfall and stream. My question is this: I want to enlarge my pond by adding additional liner. Since the current liner will stay in place, is it possible to seam the new liner onto the old one since neither will be on a smooth, flat surface? My pond and vegetation is well eatablished and I just can't bear the thought of destroying it all in order to enlarge. Any thoughts?