Filter Sock 200 Micron Welded – 7×16 Size – Seachem Filter Socks play a vital role in preserving aquarium water clarity. These socks effectively capture floating debris and waste, preventing the accumulation of harmful dissolved organics, nitrates, and phosphates. A must-have for sump and overflow setups, these filter socks boast a 200-micron rating for superior particle filtration. Their welded construction ensures durability, avoiding the breakdown common with stitched alternatives. Additionally, the singed edges minimize wear and prevent fiber shedding back into the aquarium water.