"bjt" wrote in message ...
The leaks seem to be concentrated in the top 18 inches or so of the liner.

The liner is about 4 years old and I had only sand under the liner. In
retrospect I would have put an actual underlayment under the liner but that
was 4 years ago when I was young and foolish :-)

Brian

"C G" wrote in message
.com...
bjt wrote:

Last spring I spent a couple of months finding leaks in my liner and
patching them. Each leak involved raising the water, waiting a few days
for
the leak to lower the level, then gentle inspecting the perimeter of the
new
water level to find the leak (pond is 8x15 so the perimeter is long),
lowering the water to get some room to work, patch leak, start over.

How far down are they? How old is the liner?


At what point should I give up and replace the liner?

What did you put under the liner? Around here we get old carpet from
installers. Works great for protecting the liner from rocks, roots,
etc.


I'm wondering if starting over again with concrete would be a better
long
term solution. How think would I have to make the concrete on a pond
this
size?

I'm not a big fan of concrete, especially in areas that have a deep
frost.

It sounds like your have a PVC liner like I had at the start. Any
place the sun hit it after four years has grown dry and brittle.
Invest in a pond grade-EPDM
45 ml liner. I purchased mine at Water Garden Creations with no
shipping, at a good price and delivered to the door. Happy water
gardening.