Red Sea 225 Micron Felt Filter Bag

Red Sea's replacement felt filter bags are specifically designed for the Red Sea aquariums, making them fit perfectly in the Red Sea bag holders and preventing water bypassing the felt. They can also fit any standard 4" filter sock holder.

Red Sea's Filter Bags are available in two different materials (mesh & felt) and two different porosities (100 & 250 micron).

These 250 micron felt bags are ideal for regular use and polishing the water, although will not clog up as quickly as the 100 micron felt sock.