Penn-Plax Filt-a-Carb Replacement Activated Carbon Media Cartridges (2 Pack) – Universal Fit for Most Undergravel Filters – Provides Chemical Filtration (FC3)

Penn-Plax Filt-a-Carb Replacement Media Cartridges (2 Pack) – Universal Fit for Most Undergravel Filters – Provides Chemical Filtration (FC3)

Pawfly Aquarium Air Stone 1 Inch, Fish Tank Air Stone Aerator Bubble Diffuser for Nano Air Pumps Small Buckets and Fish Tanks, 10 Pack

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