The step by step thread REALLY got me thinking, and I've gotten inspired beyond the blue baby pool out there now. We have a 10 by 10 run, with the baby pool in that. We dug this hole outside of it to aid in draining and we also needed the dirt to build up a garden area. So now there is this hole. Our land lady is taking down her big giant pool, that has a liner in it, quite similar to a pond liner. She's going to throw it out. We're thinking we'll cut a big chunk off the bottom before she does so, and make that hole a lot bigger, build a filter box, and actually have something legitimate going on. Questions though, I've never had a pond with ducks, but growing up we had a 16x20x3 concrete pond with natural plant filtration and some koi. We're thinking this pond would be 8x8 or so. Half dug in, half exposed. I was thinking of sinking some planters in it with plants, surrounded by a plastic mesh of sorts to protect them from the ducks. Or something. The filter, I was looking at DIY filters. We can have a ground level filter box and waterfall system? Even if the pond itself is another 2 ft deeper than ground level and about a foot above the ground? or do we need to finagle some other kind of idea? I'm hoping the care of it will be easier with filtration coming from both "artificial" means and plants. Do we need to line the above ground and below ground areas with the land scape timbers, or can we do only what is to be above ground? I was going to put a pop door into the run, and incorporate a run around this pond too. A "porch" area at the pop door, but basically the pond will be surrounded by fencing and a roof, so that their play area no longer takes up a portion of the run. I can shut them out of it then as well, for cleaning or winter. Or heat it. I haven't decided yet how we're going to manage winter. With the need to dump it every couple of days removed by filtration, what keeps mosquitoes at bay?