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.