We use standard poly floss that you can get at Wal-Mart, Shopko, Target, etc. It's in the home section and commonly used for stuffing pillows. A large bag is around $3.
polyfilter is not the same as polyfloss that you can purchase at any wal mart or petco store.
polyfilter is a special filter pad that will remove heavy metals and a bunch of other crap out of the water. Really good stuff this polyfilter
