My pond has a diameter 58ft and 16ft at center. I'll be sliding. some places too steep to slide.I need to start filling. I know what aeration system I will use. It will be housed in my shop about 60ft from pond. It is a backyard landscape,fishing and sitting on the deck having a beer pond. I figure 3 years before I can do much fishing. Got a two year warranty on any leaks. I called our state guys and they were supposed to come out but didn't, so, it is what it is and I will try hard to make it a great spot again. Thanks to everyone helping me. I have learned much and know less:)