Hey guys so in a couple of months ill be moving from my tiny apartment to a new house!, the backyard is really big and spacious so i was thinking of setting up a pond im in the north so its gonna be like cold water species like Goldfish and Koi, anyone know any websites or anyone on here with pond building knowledge? i don't wanna spend more than $900, any other coldwater species i could keep that would survive through the winter? i was thinking of catching some local bullheads and keeping them in there would Goldfish and Koi go together with natives? anyone here have similar type pond can you guys post pics. really exited i finally get more space and my own room for my aquariums/reptiles!!