Felt Filter Sock 4 x 14in With Draw String (OVERSTOCK)

Felt Filter Sock with Draw String

Filter socks are used as an effective first stage of an aquarium's filtration process and should be placed so that water coming from the tank filters into the filter sock first removing uneaten food, detritus, organic waste, dust and other small particulates from aquarium water. This dramatically improves water quality and reduce maintenance on pumps, reduced sump cleaning and less impact on the biological filtration by removing the excessive waste that would otherwise break down in the system. The routine use and rotation of filter socks will help reduce ammonia and nitrate producing organic waste from accumulating