This 4"x10" 100 Micron Filter Sock is an essential tool for maintaining the cleanliness of your saltwater aquarium. The fine mesh material effectively captures debris and waste particles as water flows through it, preventing them from circulating in your tank. The sock is easy to install and fits most standard filter holders, making it a convenient addition to your aquarium setup. Regular use of this filter sock will help to improve water quality and promote the health of your aquatic inhabitants. Invest in this high-quality filter sock to ensure a thriving and beautiful saltwater aquarium.