Hello all My husband and I are currently in the process of putting together a pond for our ducks. They currently use a doggie pool but it is way to small for the 6 of them. We already have a preformed pond (between 250-300 gallons) . We are just trying to figure out a few things Should we buy a pump? If we should what kind? How do you keep it clean? Do you have some sort of filter or underwater vacuum? (I have to clean my doggie pool everyday or else they won't go in) How often do you clean the pond out? Do you have the water drain into your backyard or elsewhere? If you experience the winter season like I do, what water heater do you use for the pond? I have been doing research like crazy and have viewed the other pond threads on here about 6 times each and have looked at numerous sites for pumps, filters, vacuums, etc. Everything I find has such mixed reviews that it has become confusing because I feel all I do is research and I am starting to forget what I liked, didn't like, etc. Any help is greatly appreciated. Thank you and enjoy your Sunday!!