Aqueon Quietflow Filter Internal E - 20G - Medium
Simple yet powerful, the Aqueon Internal E-Series Filters do a great job with small tank filtration. Low-profile design attaches quickly and easily to the back of your aquarium. Easy-to-use Aqueon filter cartridges do the dirty work and slide easily into the filter. A coarse pad and Bioholder grid also help facilitate bacteria growth to enhance biological filtration. The 20G model uses M Aqueon filter cartridges and is recommended for tanks 20 gallons and less. 130 gph.