Method of raising sea water fish, aquarium fish tank of sea water fish and water tank system for raising sea fish

摘要

The present invention relates to a method for raising sea water fishes in a water-feeding aquarium with a water-circulating function and having an upper floor having fine holes, wherein the filter material placed on the upper floor of the water-And the particle size of the sand material is 2.7 to 3.5 mm. Coral sand is used as the sand containing calcium. The coral sand is suitable as a material for growing aerobic bacteria, and when the size of the coral sand is set to the above-mentioned size, the aerobic bacteria grow securely and the circulation of water becomes very good as a water tank for raising sea fish.;The present invention also relates to a water tank for raising sea water fish for carrying out this method and a water tank system for raising sea water fish having such a water tank. The water tank system includes a water tank having a bottom portion for storing water for raising sea water, a bottom portion provided on the bottom portion of the water tank, a bottom portion filtration device having a filter material placed on the bottom portion, A water pipe for sending the water filtered by the bottom filtration device to the external filtration device by the bottom filtration device and a water filtration device for feeding the water in the water tank to the bottom filtration device, And circulation means for circulating the water through the water tank. The water pipe may be provided with opening and closing means for opening and closing the water in the water tank for directing the water to the external filtering device without passing through the bottom filtration device.