Bio Modules Filter Insert 50/200

Biological filter media encourages beneficial bacteria growthBiological filtration helps remove harmful ammonia and nitriteInert ceramic cylinders for use in fresh or saltwater aquariums Economically priced ceramic cylinder inserts for your Hagen AquaClear Powerfilter. Extremely porous design supports a huge colony of beneficial bacteria. Offers biological filtration to remove ammonia and nitrite to help maintain a healthy aquatic environment. Safe for fresh or saltwater systems. Model Filter Model Aquarium Size 20/Mini Mini and 20 5 to 20 gallons 30/150 30 and 150 10 to 30 gallons 50/200 50 and 200 20 to 50 gallons 70/300 70 and 300 40 to 70 gallons 110/500 110 and 500 60 to 110 gallonsPlease click on "More Information" for use instructions and further details.