Penn-PlaxSmall World Aquarium Filter – Comes with a Disposable Media Cartridge (Bio Sponge, Carbon, and Zeolite Crystals) – Safe for Freshwater and Saltwater Setups

Penn-Plax Small World Aquarium Filter – Comes with a Disposable Media – Safe for Freshwater and Saltwater Setups (SWF1)

PENN-PLAX Standard Airline Tubing for Aquariums – Clear and Flexible – Resists Kinking – Safe for Freshwater and Saltwater Fish Tanks – 8 Feet