On Mon, 2 Jun 2003 19:07:21 +0100, "Dave" wrote:

Hi


I was thinking of putting a sheet of polystyrene packing under the rocks to
protect the liner. Will anything leach out of the polystyrene that may harm
the wild life? The pond is teeming with wildlife in the form of frogs and
newts which I would like to encourage and protect.

Thanks for any help given

Dave

I would suggest using an extra layer of liner.

I would avoid anything material based. Our landscaper put the felt liner under
the boulders and that wicks water from the pond to the surrounding garden. As a
result I have a constant wet area around the boulders.