For example 100 micron is equal to 0.1mm in size. Therefore a 50 micron filter sock will catch more waste than a 400 micron filter sock, but will require cleaning much more frequently. Typically felt filter socks are used more frequently, but nylon filter socks are becoming increasingly popular due to their easier cleaning ability.
eBay
You are purchasing a high quality, UK manufactured filter sock. Material: High Quality Felt. These Filter socks provide crystal clear water!
eBay
These quality filter sock holders are made from thick acrylic, and will fit sump tanks with a glass size of 12mm or less. The 4" filter sock version has adjustable screws to allow the height of the filter sock holder to be adjusted.
eBay
You are purchasing a high quality, UK manufactured filter sock. Material: High Quality Nylon. These Filter socks provide crystal clear water!
eBay
100 micron is finer however will need cleaning more often than a 200 micron bag. 1 x AQUARIUM NYLON FILTER SOCK.
eBay
There are slight difference between the picture and the real item caused by light brightness,hope you can understand. About color.
eBay
1/200 MICRON 4" LONG NYLON FILTER SOCK AQUARIUM MARINE. You are purchasing a high quality, UK manufactured filter sock. Material: High Quality Nylon. These Filter socks provide crystal clear water!
eBay
You are purchasing a high quality, UK manufactured filter sock. Material: High Quality Felt. These Filter socks provide crystal clear water! These bags have a high quality plastic welded ring, which does not contain any chemicals, and is totally suitable for use with aquariums.
eBay