Berlin Sump Filter Sock 4 Inch 100 Micron

Filter sock for Berlin filtration system. 100 micron (smaller pore size, filters out more fine particulates).

Inner Diameter: 3-9/16" (9cm)
Outer Diameter: 4-1/4" (10.8cm)

10-11" approx. length.(25-28cm)

*NOTE: Please rinse all filter socks prior to first use

Filter socks are the most convenient form of mechanical filtration. They remove excess food, detritus, organic waste, dust, and other particulates. Removing these particulates from the water column will reduce the amount of organic matter that produces ammonia and other undesirable substances in the aquarium. Filter socks also help prevent larger objects, such as sand, crabs, snails, etc. from damaging pump motors. Regular filter sock use will lower organic levels and result in CRYSTAL CLEAR WATER!