Fluval 107 Performance Canister Filter Up to 30 US Gal / 130 L

An external canister filter rated for aquariums up to 30 US gallons, giving small-to-medium tanks the kind of multi-stage mechanical, chemical, and biological filtration usually reserved for larger canister setups. Being external, it keeps all filter media and hardware out of the display tank entirely, and its self-priming design makes routine maintenance considerably less messy than older canister generations.