Penn Plax Polyfiber Filter Media PadThe Penn Plax Polyfiber Filter Media Pad is an adaptable filtration solution for ALL filter types. Just cut it to fit your needs! This thick pad is made of dense material that removes free floating waste, debris, and organic particles resulting in crystal clear water. Its advanced filtering technology improves the water quality of your aquarium or pond. Filter media pad for all filter types Effectively removes free floating waste, debris and organic