AquaClear Power Head Quick Filter Cartridge by Hagen. The AquaClear Quick Filter Replacement Cartridge fit the Large AquaClear Quick filter. This filter pad fits AquaClear Powerheads (except models 110 and 901), and is ideal for polishing water after maintenance.
Traps particles and debris
For fresh and saltwater
One size fits almost all powerhead models
The AquaClear cartridge has an extra thick duo-density pad for waste and debris removal. This AquaClear thick pad allows it to remove solid waste and particles as small as 1 micron. Can be used for fresh and saltwater aquariums.

Turns your powerhead into a Quick Filter for rapid removal of most particulate waste (as small as 1-micron).