MULTI-LEVEL AQUACULTURE DEVICE FOR BENTHIC ORGANISMS SUCH AS BIVALVES AQUACULTURE METHOD AND BIOFILTER USING SAME

摘要

It is an object of the present invention to provide a biorhythm such as a bifurcated biorhythm that can be supplied not only inexpensively and stably to the market, but also can increase the number of bred per unit area and is economical, A form device and a method of form. It is possible to combine the rectangular breeding box 2 whose upper surface is opened with the outer tank 2b as the watering water storage portion and the inner tank 2b as the storage portion of the bifurcated water . A gap D ₁ serving as a water supply port and a gap D ₂ serving as a gap for depositing a sediment on the bottom surface of the outer tank _{2 b} are formed so as to be partitioned and developed in a state where the inner tank 2 b is housed in the outer tank _{2 a} . A plurality of water through holes 2e are drilled in the bottom surface of the shell receptacle (inner tank) 2b, and an object 2c such as a mesh filter is attached to the upper surface thereof. The front and rear portions of the breeding box 2 are arranged in a zigzag form and hierarchically in the vertical direction so that the breeding water W overflowing from the front face flange portion 2d of the shell receptacle portion 2b is directed downward And flows down to the water supply reservoir portion 2b of the breeding box 2.