Φ13/Φ17 Oil Film Remover Water Protein Surface for Fish Tank, Φ13, as described

Two types of Inlet diameter: Φ13, Φ17 The inflow and outflow filter pipe designed for making idealistic water for plant growth. It make an elegant in the boxshaped aquarium, the give superb appearance to your aquarium. Adjustable is fast and effective. Effectively remove fish tank and Aquarium surface oil.Provide a fresh environment for fish to breathe.