The Seachem Zip Bag Small Mesh is a durable and highly effective filtration media bag designed for use in saltwater reef aquariums. This small-mesh bag features a convenient corrosion-proof zipper, making it ideal for securely holding various filtration media, particularly fine resins and other small granular media, preventing them from escaping into the water column.

Measuring 32 cm x 14 cm (12.5” x 5.5”), this bag easily accommodates up to 1 liter of filtration media. Its robust construction ensures resistance to bleach, caustics, and acids, offering long-lasting performance in demanding aquarium environments. As the smallest mesh size in the Zip Bag line, it is perfectly suited for all Seachem filtration media, including their popular resins, and requires no strings or ties for closure.

This product is best for reef aquarists seeking a reliable and chemical-resistant solution for containing fine or small granular filter media such as activated carbon, GFO, or specialized resins. Its secure zipper and small mesh size ensure efficient filtration without media bypass, making media changes simple and mess-free while maintaining pristine water quality.