Fluval FX2 High Performance Canister Filter – A powerful external canister filter in Fluval’s FX series, designed for large aquariums. The FX2 offers multi-stage filtration with massive media capacity, enabling thorough mechanical, chemical, and biological filtering for tanks (roughly up to 150 gallons). It features Smart Pump technology for self-priming and efficient operation, and a convenient purge valve for easy maintenance. The FX2 delivers superior water clarity and quality, handling heavy bio-loads with ease, making it suitable for big fish or densely stocked aquariums.