Hello. I have an infinity edge pool that empties into a trough. The trough is about 18 or so inches wide, about 28 feet long. It gets flithy! I have a cover for the pool that keeps that clean but the trough is open to all the elements and trees. I wish I knew what a pain it would be to keep clean (although I think I still would have gotten it anyways). Debris is constantly floating on top and falling to the bottom. I even have raccoons that come nightly for their daily drink and drop marsh sand into the trough. I am open to any suggestions to keep it clean besides vacuuming it manually daily. I tried 2 different automatic robotic pool cleaners. They dont clean in a straight line. They both attempt to turn almost immediately and get stuck. Any ideas? Thanks!