Eheim Foam Filter Cartridges - 2 pk

Eheim Foam Filter Cartridges are open cell foam cartridges for effective mechanical and biological filtration; suitable to use with the Eheim Aquaball (60/130/180), Eheim Biopower (160/200/240) and the Eheim Prefilter (Item# 4004320). You may choose to rinse and reuse these cartridges until they become heavily discolored and brittle. By doing so, you will obtain an excellent biological effect for a successful hobbyist experience.