I wonder if someone here can help me: We have a Waterfall with a small pond at the bottom (4 feet wide, 3 feet long, 2 1/2 feet deep). It was installed by a landscaper about 4 years ago. Since last year the pond loses water fairly quickly (over night). We haven't turned the pump on all winter because we've been meaning to take out all the rocks and replace the liner.

I'm having some people working in the yard right now and they offered to fix the pond for me by using concrete and a liner. Does that sound right? From what I'm reading here it sounds like most of you just use a liner.

I'd really appreciate some advise on this - thank you! :)