Dophin CF11508 Canister Filter (with CO2 Injection) Comes with provision to integrate co2 injection. Unique streamlined design, efficient use of the entire canister volume. Adopt super quality Dophin series canister filter which is less energy consumption, more reliable operation, provides longer life and low in noise. Filter through different media, improve the reproduction of beneficial nitrobacteria. The structure of pump head is wonderful, allows for simple operation and cleaning. For fresh and salt water aquarium
