On Fri, 13 Apr 2007 19:00:31 CST, Gill Passman
wrote:

My major concern with using old carpeting (or even new) would be to
ensure what the backing is....some carpets have foam backing that can
become toxic to fish....now of course a good quality weave carpet would
not have these issues but then you need to look at what chemicals have
been used on the carpet itself - so many carpets these days are treated
with stuff to make them stain resistant etc. etc.

Just being cautious here.....but it is a true danger.... Gill

If one was going to put the carpet where it was getting in or wet and run
off going into the pond, that might be a concern. Usually most carpet goes
on the bottom, up the sides, and then one has extra liner going under and
up amongst rocks or whatever is going to be around the pond. So no water
that has touched the carpet goes into the pond.

At the D.pond we used both foam underlay and carpeting. The "soil" out
there was more rocky than dirt, and the rocks had a lot of sharp edges. The
foam + carpet has made for a very cushy walk when one has to go in the pond
and work. ~ jan
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Zone 7a, SE Washington State
Ponds: www.jjspond.us