hi ev1! nice to be building my 1st pond! I love gardening and have always wanted to have a lil pond and well hubby found a pond liner prefab and lol its main use is because i need something for my ducks to swim in.. lol Ummm man i hope i can find filteration good enough to handle these dirty birds.. I found a 60 yr old hypromatic pump that works soo now i need to make a homeade filter..lol (until i can find a reasonable 750 gph submersible pump or somehting) any ideas sure would be helpful specially if its possible to get rid of there umm fecal matter.. yuck!