Seachem Laboratories Mesh Filter Sock with Plastic Collar White 1ea/4 In X 12 in, Small

Seachem Laboratories Mesh Filter Sock, sized 4x12 inches with a 250 Micron mesh, is essential for keeping aquarium water pristine. These filter socks effectively trap floating debris and waste, preventing the accumulation of harmful dissolved organics, nitrates, and phosphates. A must-have for sump and overflow setups, this product is crafted from durable Polyester Mesh with secure stitching for long-lasting use.