Vivid Creative NOSOK Filter Sock Replacement - 4 Inch Sponges Large cartridge fits QuietFlow Internal

Large cartridge fits QuietFlow Internal Filter AT40 using two cartridges

and a wireless master/slave controller system

Helps block blue light for improved coral color visibility

UPC: 042055324403

Required hole size: 1-1/2 in

Vivid Creative NOSOK Filter Sock Replacement - 4 Inch Sponges Large cartridge fits QuietFlow InternalVivid Creative NOSOK Filter Sock Replacement 4 Inch Leave Traditional Socks Behind with the NOSOK 4 Inch The Vivid Creative NOSOK Filter Sock Replacement 4 Inch replaces a compatible 4 inch aquarium filter sock with a reusable and customizable mechanical filtration system. The NOSOK400 can use its heavy duty nylon screen or inexpensive filter floss to provide filter sock like performance without repeatedly washing dirty fabric socks. Screen or Floss