The present invention relates to a sea water circulation system capable of multi-variable control in a marine organism experiment. The system comprises: an experimental water tank in which a marine organism experiment is carried out; a main water tank in which sea water for supplying to the experimental water tank is stored; a pump for supplying the sea water from the main water tank to the experimental water tank; a water level control tank distinguished from the experimental water tank by a partition; a plurality of openings provided in the partition to allow the sea water to move between the experimental water tank and the water level control tank; a water level control pipe installed in the water level control tank and having a water discharge port for discharging the sea water to the main water tank; a filtering section installed in the main water tank for removing the foreign material contained in the sea water discharged from the experimental water tank through the water level control pipe of the water level control tank; a water quality detector installed in the main water tank for determining the quality of the sea water supplied from the main water tank to the experimental water tank; a water quality controller linked to the main water tank for controlling the quality of the sea water supplied from the main water tank to the experimental water tank; and a controller for controlling the water quality detector and the water quality controller.;COPYRIGHT KIPO 2016
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