Aquapapa Aquarium Filter Media Bags for Pellet Carbon, Bio Balls, Ceramic Rings, Ammonia Remover

Amazon.com Price: $6.46 (as of 25/03/2022 06:35 PST- Details)

Zipper design, reusable; great for use in canister filter system.
Extra fine mesh bag good for use with granulated carbon, pellet carbon, and any other aquarium filter media.
Holds media together to keep aquarium clean