Refill Sponges Roll Foam for Foam Cartridge Filter for Aquarium (7x6x7cm), 5 Pieces

Venus Aqua Refill Sponges Roll Foam for Foam Cartridge Filter for Aquarium (7x6x7cm)

Venus Aqua® Refill Sponges Roll Foam for Foam Cartridge Filter for Aquarium (5x5x10cm), 5 Piece

Foodie Puppies Aquarium Biochemical Filter Mechanical and Biological Filtration Sponge for Fish Tank - 6 Pieces | Ideal for Fresh & Saltwater Aquariums, Promotes Clear Water & Healthy Fish Environment