I am building my own filter for my new pond. I have decided to use the
packing strapping for use in a biofilter. However, I would like to prefilter
the water in a mechanical filter. I was hoping I could find some sort of
foam or fibrous material. The only thing is I don't really want to buy off
the net, but would prefer to buy locally. Does anybody know of a place in
Montreal and surroundings that would have such a product.

Mike