Intensified controlled fish growth in tanks implementing a multipurpose flow device.
Fish biomass (Tilapia sp.) were raised at high stocking density in 1-m(3) tanks containing 450 L of water. The water was changed continously by means of a jet flow regulator. The jet flow regulator maintained adequate dissolved oxygen (DO) and a low ammonia level, while the suspended solids were discarded. In such a system, an annual yield of above 15 kg/m(3) can be expected. The application of the jet flow regulator in aquaculture is discussed.
Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Kiryat Sde-Boker, Israel 84990.
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Oron
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Granoth
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Porath