![Amazon.com : API FILSTAR XP FILTRATION FOAM 20 PPI Aquarium Canister Filter Filtration Pads 2-Count (723A) : Aquarium Filter Accessories : Pet Supplies Amazon.com : API FILSTAR XP FILTRATION FOAM 20 PPI Aquarium Canister Filter Filtration Pads 2-Count (723A) : Aquarium Filter Accessories : Pet Supplies](https://m.media-amazon.com/images/I/91GO2IFbZyL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : API FILSTAR XP FILTRATION FOAM 20 PPI Aquarium Canister Filter Filtration Pads 2-Count (723A) : Aquarium Filter Accessories : Pet Supplies
![Amazon.com: HXHLYH(60 PPI) Air filter Sponge, 30 Pieces of Replacement Compressor System Accessories Cold Mist Filter Accessories Sponge Air Filter : Tools & Home Improvement Amazon.com: HXHLYH(60 PPI) Air filter Sponge, 30 Pieces of Replacement Compressor System Accessories Cold Mist Filter Accessories Sponge Air Filter : Tools & Home Improvement](https://m.media-amazon.com/images/I/51i-us1lyfL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: HXHLYH(60 PPI) Air filter Sponge, 30 Pieces of Replacement Compressor System Accessories Cold Mist Filter Accessories Sponge Air Filter : Tools & Home Improvement
![Amazon.com : ALEGI Aquarium Filter Sponge Pad 30/40 PPI Bio Sponge Filter Media Cut-to-Size Foam for Fish Tank (17.5" x 17.5" x 1.2" 40PPI) : Pet Supplies Amazon.com : ALEGI Aquarium Filter Sponge Pad 30/40 PPI Bio Sponge Filter Media Cut-to-Size Foam for Fish Tank (17.5" x 17.5" x 1.2" 40PPI) : Pet Supplies](https://m.media-amazon.com/images/I/71MDCMyybfL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : ALEGI Aquarium Filter Sponge Pad 30/40 PPI Bio Sponge Filter Media Cut-to-Size Foam for Fish Tank (17.5" x 17.5" x 1.2" 40PPI) : Pet Supplies
![Amazon.com : SHUNTING Filter Foam Sponges,Filter Media Pad,Filter Sponge, Cut-to-Size Foam for Aquarium Fish Tank 19.6"x19.6"x1.57"(50PPI) : Pet Supplies Amazon.com : SHUNTING Filter Foam Sponges,Filter Media Pad,Filter Sponge, Cut-to-Size Foam for Aquarium Fish Tank 19.6"x19.6"x1.57"(50PPI) : Pet Supplies](https://m.media-amazon.com/images/I/61aZe6M1W0S._AC_UF350,350_QL80_.jpg)
Amazon.com : SHUNTING Filter Foam Sponges,Filter Media Pad,Filter Sponge, Cut-to-Size Foam for Aquarium Fish Tank 19.6"x19.6"x1.57"(50PPI) : Pet Supplies
![Amazon.com : ALEGI Aquarium Filter Media Foam Material Cut to Fit, 36" x 12" x 1" 20 ppi, Bio Pre Filter Sponge Pad Sheet for Fish Tank : Pet Supplies Amazon.com : ALEGI Aquarium Filter Media Foam Material Cut to Fit, 36" x 12" x 1" 20 ppi, Bio Pre Filter Sponge Pad Sheet for Fish Tank : Pet Supplies](https://m.media-amazon.com/images/I/81KodM3c2FL._AC_UF1000,1000_QL80_.jpg)