Thank you for visiting our ebay store! These filter socks are perfect for sumps. – Micron filter bags provide excellent mechanical filtration, which helps reduce the amount of ammonia-producing organic matter in your aquarium by trapping debris which also helps prevent large and small object like sand and coral from damaging aquarium equipment. – Solid construction and heavy duty stitching make these socks strong and durable so they can be cleaned and reused numerous times. – Bring clarity to your aquarium with our professional grade micron filtration sock. – Micron filter socks are an essential part to keeping aquarium water clear and clean. – 4.5″ Rectangular filter socks2 Pack – 4.5 Inch 200 Micron – Aquarium Felt Filter Bags -7×4.5″ Rectangle Sock
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