Giantz Aquarium External Canister Filter Aqua Fish Water Tank Sponge Pond 1250L1250L H 4 Stage Filtration Leak Proof Use a multi level approach to filtration and filter your tank water with our Giantz Aquarium Filter and Pump. This external filter is designed to be positioned outside of the tank and draw water into the filter through an inlet tube and return the water via an outlet tube. Suitable for both freshwater and saltwater aquariums sized up to 250 litres, this type of external filter avoids the need for an unsightly