• 4 Poseidon Reef Filters-4 Inch


    No more bulky filter socks to bang around in your washing machine and less plastic in the environment!  Poseidon Reef Filters feature a 4 inch, 16 inch long, reusable, polyester filter sock with a 50 micron pore size.  Use with our plastic Filter Rings sold separately.  The filter sock can be cut to length and then fitted to the Filter Ring.  The assembly will fit in most 4 inch filter sock holders.  When the filter is saturated simply remove it from the Filter Ring and replace it with a clean filter.  Soak saturated filters overnight in dilute household bleach and then run them through the washing machine.