Aqua One Betta Haven Carbon Filter Cartridge (2pk) 162C Aquarium Fish Tank Media

Aqua One 162c carbon and polymer wool cartridges as used in your 5l Betta Haven pico aquarium The 162c carbon cartridge is a disposable filter cartridge pack designed to trap solids and remove dissolved contaminants too Each pack contains two cartridges When the cartridges are dirty, just throw them away and replace with fresh ones. Rinsing out is not recommended as this will not regenerate the important activated carbon layer leaving you with much reduced filtration.