Premium clarity: reusable bags hold biological media and bacteria cultures that support healthy water.Compatibility: fits MarineLand Penguin and emperor Pro Filter media baskets and most external filters and canister filters.Easy maintenance: Simply dispose of old media and rinse reusable bag clean.Versatile: designed to hold a variety of media, including K2 biological media for beneficial bacteria in both saltwater and freshwater aquariums.MarineLand Filtration products: MarineLand products are designed with both performance and style in mind.

Marineland 4Ct Reusable Media Bags