Review on Aquarium Felt Filter Bags - 2 Pack, 4.5 Inch 200 Micron - Premium Rectangle Filter Socks for Eshopps by Keisha Smith

It's terrible! They were already disassembled when taken out of the box! The "Heavy Duty Stitching" seams didn't even go through the filter socks! They do NOT fit my online stores, they are about 2 inches longer so they don't sit directly in the pan but float which allows all the water to fall around the filter. What goes into the filter has no seam at the bottom, so it just falls through. If a conventional filter captured 100% of the material, I would estimate that it would hold back around 40%.