"A.N.Other" wrote in message
...
I am thinking of adding some fairly large rocks in a
"pile" to provide my
fish with some hide outs.
I have had problems with Great Blue herons and nothing I
have done to date
seems to work.
I am reluctant to put the rocks in direct contact with the
liner, would it
be Ok to put a layer of padding (probably old carpet) on
top of the liner,
under the rocks.

other ideas would be welcome.
ANO

I use PVC pipe.

Gail