Filter Socks for Saltwater Aquarium, Sump Filter Sock, Felt Aquarium Socks, Reef Filter Sock (2 Pack, 7" x 12")

200 Micron Filter Socks: These polyester filter socks are favored by both customers and aquarium service technicians. They prevent clogging while ensuring crystal-clear water. The durable construction allows for multiple cleanings and reuse. Note that they do not fit Red Sea filters.