I'm going to tear my pond out and replace the liner with concrete. I'm trying to work out the bugs so I was going to ask you guys what problems you've had using concrete so I can address them now. Any advice on the plumbing ,pumps or overflow ideas would be appreciated. I have a lot of it planned out but outside advice always seems to come handy. I've heard people mention leaching lime with rain water, what is this and would a simple drain tile going to a sump pump solve this problem .
You may have seen my pond but if not here's a picture, It's going to be a chore to tear out.

You may have seen my pond but if not here's a picture, It's going to be a chore to tear out.