Love the natural stone, I am planning to use mine as well. I've never tried it, any insight? My dad was a mason, so I know the fundamentals with straight edges. Common sense tells me that natural stone is a whole different game.
Just an idea, saw that Harbor Freight has an 8' X 8' Pond Kit w/fountain head for $99.00. Walmart has a smaller one for $48.00. In addition, you will need a filter, but one can be made from the leftover liner and a small plastic waste can if you are so inclined. My husband and I just put our pond in and it only takes a Saturday. This was a kit we got end of season last year a K-Mart for $79.95. The waterplants can be purchased for 75% off this time of year and overwintered in a dishpan of water in an enclosed outbuilding or basement. In the second pic, you can see the waterfall w/ mini bog in progress up the hill. This is my first try at posting pics so let me know if it doesn't work...

http://sc.groups.msn.com/tn/DF/70/enyardreems/4/d2.jpg

http://sc.groups.msn.com/tn/DF/70/enyardreems/4/d3.jpg

Thanks for the ideas. I had no experience building before this project. I put larger stones on the bottom and built up throwing mortar in. I think I have the hang of mixing the mortar now but during the project I had all different consistencies. I didn't even use string with this. I kept rearranging until I thought it looked okay. It was near the hardest work I've ever done.

Last night I decided to make the pond larger, almost encompassing the entire circle with a waterfall at one end. I was thinking some moss or water loving growth around the edges.

Thanks again for the ideas. I may follow up asap. Is this the best forum for pond water gardens?

Regards, Jim

Let's try the pics again, I think I got it now....
The Pond
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The Pond II
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You can also go to my home page and view the Album named 'Sunset Hills'. The progress on the yard is mostly pages 5 & 6.

Thanks for the info

Here is a link that might be useful: My Home Page