I was wondering if anyone else has a indoor pond for their ducks, due to winters being so harsh that the ducks can't go outside. I currently live in Alaska and as we get further into winter and our weather is getting colder and colder here, i am still trying to master my indoor pond for my ducks, currently i have a very nice setup for them pond wise, however i can not seem to keep it as clean as i would like it for them. I currently have a filtration system for the pond that seems to be doing no good what so ever. I was wondering if anyone had any suggestions?