Pura (Magnavore) APU00408 7-1/2 by 10-1/2-Inch Aquarium Filtration Pad, Small Full spectrum chemical filtration pad loaded with three powerful medias for total filtration in reef planted, fresh and saltwater aquariums Made from a carefully selected thermally bonded blend of polyester fibers Ideal for wet or dry drip trays, canister filters, power filters and as supplemental chemical filtration in Eclipse systems Offers very fine filtration while resisting clogging Available in small size; measures 7-1/2-inch length by 10-1/2-inch by 1/2-inch thickness