I have one of the preformed ponds in my yard. It is used as a small water garden near my back door. Lots of frogs live there.
I have a second larger pond made from the sheeting that was hand dug and laid out. It is filled with koi and lots of various plants. We have found newts, salamanders, frogs, toads and other things in there as well.
When we first moved here we thought the pond was small. We decided to clean some of the plants out and realized that the entire lower end was overgrown with a giant plant rootball. It took a tractor and a couple hours of cutting to haul it out.
I want a pond or something that needs little maintenance so I can have ducks and geese. I did ducks and I hate the mess and the wading pools, etc. I have goose eggs in the bator now and dred the mess and water and wading pool looming in my future.
I was told if I built another preformed pond that the pumps would not be able to keep up with the mess and it would clog and burn out.
I am really keeping my eye on this thread for a solution to my problem, too.
Thank you for starting it.