The Fluval A455 is compatible for use with the following:
The Fluval Nano Replacement Aquarium Filter - A455 provides both mechanical and biological filtration for aquariums up to 15 gallons in size. This aquarium filter features an adjustable flow output and attachable spray bar, and is safe for use with delicate fish and shrimp. This aquarium carbon filter is easy to maintain and use.
Fluval Nano Replacement Aquarium Filter - A455 specifications: