product description:
Constructed with Air Duct, Water-air Flow Output Manifold, Right-angle Duct, Air Effusion Chamber, Manifold Adaptor, Cap, Sucker, Three-way cock, Bio-chem Filter Cartridge, Bio-chem Filter Sponge, Bio-chem Filter Cap; The sponge is designed with multi-layer and the material is easy to clean; Model WH-02, WH-03, WH-04 are designed to operate away and above the aquarium bottoms; The air diffusion chamber produces minute and large number of air bubbies which increases the oxygen solubility in the water; Quite operation, suitable for angle fish and other small size fishes raising; Note: Soak the sponge in the aquarium water for 5 minutes before use will help nitrifying bacteria colonize easier; Always use aquarium water to clean the sponge, never use the hot water.
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