The tank mesh bags are easy to fill and empty with zipper design to keep filter media secure The bag is provided with high-quality plastic zipper,salt resistant and.It is very convenient to clean and maintain at ordinary times.When the filter material is put into the bag,Then put it into the filter tank and replace it or clean it directly Filter bags provide excellent mechanical filtration,which helps reduce the amount of ammonia-producing organic matter in your aquarium by trapping debris which also helps prevent large and small object like sand and coral from damaging aquarium equipment Nylon has poor dyeing property,but its color fastness is good,so it is not easy to stain,not easy to fade,and easy to clean The mesh media bags fit perfectly in a variety of filters including canister filters,power filters,sumps,wet/dry filters and pond filters, Weight: 0.17857443222 pounds, Manufacturer: Zambuph