Air pumps for oxygenating and embellishing all types of aquariums. Model ACO-2201/2202/2208 with single air outlet, ACO-2204/2205 with double air outlets& ACO-2206 with four air outlets. All air pumps have flow adjuster except model ACO-2201/2201/2208. Compact and original in design, all the models are fitted with rubber, anti-vibration feet.