Versatile Compatibility: Fits small filter media, especially activated carbon, zeolite, peat, crushed coral, and other types of granulated filter media. Will NOT work for very fine resins such as Purigen and CupriSorb, for these use our Extra Fine Mesh Media Bags.

Durability and Reusability: Easy to fill and empty with a top drawstring design. Washable, durable, and reusable.

Optimal Water Flow: Place the mesh bag filled with your chosen media in flowing water. Optimal hole size allows water to flow freely around and through the media. Adjust bag length by partially filling, folding, and tying it off.

Secure Closure: Custom bags prevent loose media from damaging water pumps or filter motors. Safe for both freshwater and saltwater aquariums. 🐠🌊