Has anybody ever made a pond before? We have always wanted one and are thinking of adding one but I guess I'm just not sure which kind is best? Like one of the hard plastic molds or the flexible liner stuff. We recently found one of the hard plastic ones at our local dump but it's not very big. I mean, it's pretty big, but I think I want something a little bit bigger? I can add photos of it later. But anyway, what is best or easiest? I currently have 4 goldfish and they are rapidly outgrowing their tank so I'm going to need to either buy a new, bigger tank, or build a pond soon. Preferably I would just build a pond and not shell out the money on a tank since we want a pond anyway but I may have to do both because it has to be a certain depth to not freeze, right? We are in southeastern MA. I also would like to possibly add more fish eventually, like maybe some koi, which is part of the reason I want a bigger pond. Also does anyone know if there is any place that might either do estimates or would come out and help us at least figure out a location for one? My mom wants a "pretty" one and likes rocks and waterfalls so I'm not even sure if building one ourselves would be best or if hiring someone would be best. Any other tips or advice you could give on maintaining one or what to plant or anything else like that would be appreciated too. Thanks in advance.