A smart water tank control device is disclosed. The smart water tank control device according to an embodiment of the present invention comprises: a sensor unit for sensing underwater environment information; a driving unit for performing dosing and feeding (feed injecting) in response to the underwater environment information; a control unit for controlling the driving of the driving unit according to the underwater environment information; and a camera unit for photographing an underwater image. According to one embodiment of the present invention, a smart water tank control device is provided, which can be easily attached to a conventional water tank by a fitting plate provided on one side.
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