Ornamental Fish Production and Management

4.1.4 Spray bar

The outlet of power filter is fitted with a spray bar to enhance aeration of water as the filtered water is returned to the aquarium tank. The spray bar is a perforated tube which produces a rain of small droplets of water falling on the surface of tank water. The agitation of water produced at the surface by falling water drops helps in better oxygen diffusion at air-water interface.