Penn Plax Filter Cartridge for Smallworld Rectangle Tank Filter - 2 pk Under Gravel Filter Test on a small area

Test on a small area before use on finished projects

EZ Feeder is equipped with an o-ring sealed lid & strong anti-slip rubber padded magnet that holds max tank thickness up to 1/2” (12

filter media

water bottle

Deep pore structure with interconnected micro-tunnels offers vast surface area for billions of beneficial nitrifying bacteria to establish and thrive

Penn Plax Filter Cartridge for Smallworld Rectangle Tank Filter - 2 pk Under Gravel Filter Test on a small areaFilter Cartridge for Smallworld Rectangle Tank Filter 2 pk Good filters make clean water and healthy fish! Easily replace your filter cartridges with a Penn Plax Smallworld cartridge two pack. These easy to install cartridges remove gasses, odors and discoloration from your water, leaving it clearer and your fish in a healthier environment. The filter works best in a small, rectangular tank, but its appropriate for all tank shapes! The small filter