4 inch reef aquarium filter sock replacement

Tired of constantly washing 4" filter socks? Me too! I present the drop in filter floss replacement for dirty filter socks. Fill the basket with cheap poly fill used for pillows and you are all set. When dirty, just throw away the floss and replace with fresh. No more dirty socks. PETG is the preferred material to withstand aquatic conditions.  the added slots on the walls are to prevent over flow, if filter media becomes clogged, thus saving your return pump from running dry. This is m