The 7" x 32" 100 micron polyester filter sock is a high-quality solution for enhancing mechanical filtration in saltwater aquariums. Its thick floss material effectively captures fine particles like dust, excess food, and organic waste from the water before they can accumulate or break down into ammonia and nitrate. The draw string design allows for easy installation directly onto plumbing components, ensuring that only clean water enters your sump while preventing larger objects such as sand grains or small crustaceans from causing damage to pumps.