Penn-Plax Smallworld Replacement Filtration Units remove harmful gases, odor and discoloration. Disposable, quick and easy filtration units for use with the Smallworld Filter. Each package contains two filtration units.
Air Filter and Filter Kit replacement cartridges for Smallworld SWF1
2 replacement cartridges in each pack
Quick, easy, disposable
Replace cartridges monthly for healthy aquarium water.
