3PCS 4 Inch Ring Filter Socks 50 Micron, Felt Filter Bags, 4 Inch Ring by 9 Inch Long

Ideal 50-Micron Filtration - Cleans Water, Prevents Clogs : Designed with a precise 50-micron aperture, these filter socks effectively trap fish waste, excess food, and debris to reduce ammonia and nitrates. This smart design offers the perfect balance-capturing more gunk than larger mesh socks without clogging as easily as finer microns, for cleaner water and less maintenance. Durable & Reusable Construction for Long-Term Value : Built to last from high-quality, resilient polyester fabric and reinforced with heavy-duty stitching, these filter socks won't fall apart after a few washes. They are made to be rinsed and reused many times, providing a reliable and cost-effective solution for your aquarium filtration needs. Perfect Fit for Standard Sumps 4Inch Ring : With universal dimensions of 9 inches in length and 4 inches in diameter, these socks are engineered to fit seamlessly into most standard sump filter compartments. You get a hassle-free setup that works right out of the box, making routine maintenance quick and easy. Protects Your Tank Inhabitants and Equipment ：More than just keeping water crystal clear, these socks create a healthier habitat for fish and corals by removing harmful particulates. They also act as a protective barrier, preventing sand, substrate, and small debris from damaging equipment like pumps and protein skimmers. Convenient 3Pcs for Easy Maintenance Rotation ,Each order includes three filter socks, giving you plenty for a regular rotation schedule. Keep a clean sock ready to go while others are being washed, ensuring your filtration is never interrupted. This value pack is perfect for dedicated hobbyists or to share with fellow aquarists.