JPH08126448A - Fish firming tank - Google Patents

Abstract

PURPOSE: To obtain a water tank firming fry having weak swimming power after incubated from egg. CONSTITUTION: In this fish firming tank, a wide water draining box or pit 3 is placed on a bottom face in a firming tank 2 as a breeding water tank, sand is spread all over the bottom face, a pipe laying 4 of a draining pipe is extended to outside from the bottom of the box or pit to keep the water level. In the fish firming of the fry in the breeding water tank, fresh water is poured into the tank to remove dirty water and the dirty water is drained from a water level-controlling pipe 5 through the sand in the box or pit 3 placed on the bottom face of the tank. The change of water for fry is continuously performed and dirt of water in the tank is removed to decrease death of the fry.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The fish tank according to the present invention relates to a tank having a drainage port for draining sewage by filtering sand suitable for raising and raising fry having weak swimming ability. This fish culture aquarium has a sand layer at the place where the sewage of the breeding tank passes to the drainage port, and is made into a three-dimensional structure.

When a fry that has not hatched from an egg is raised, the concentration of toxic components such as ammonia generated from the organic matter such as residual food and feces increases, so that it is necessary to replace water. This is to propose a breeding tank in which breeding water can be easily exchanged continuously, the causes of death of fry with weak resistance and swimming ability are identified, and various causes are eliminated to improve the survival rate of fry and to grow. .

[0003] Fry that are shortly after hatching have a weak swimming ability and cannot swim in the running water flowing to the drainage port, so they are attracted to the water outlet of the aquarium and drowned. Many die.

[0004]

2. Description of the Related Art In the prior art, a pipe is set up in an aquarium for feeding fry, a hole is opened from the side and the periphery and the top of the pipe are covered with a fine mesh, and the pipe is exposed to the outside. There is a method of guiding and draining from the drain pipe or a method of notching a part of the water tank at the height of the water surface, covering a fine mesh there, and overflowing the water in the water tank from there to the drain port. It was being appreciated.

In these drainage methods, the flow velocity suddenly increases near the drain port, so that the juvenile fish near the drain port cannot swim against the flow velocity with its own swimming power. As a result, fry were sucked up by the net and died, or the water in the breeding tank was quickly full and the fry drained with the water.

Since the mesh of each net is made fine so that fry cannot pass through it, the cover of any net is likely to be clogged with dust floating in the water, and the food and dung of the fry do not flow out, so the water storage It accumulates at the bottom of the tank and causes Ammonia, which causes the fry to die due to its toxic components.

[0007]

DISCLOSURE OF THE INVENTION The present invention is directed to a case where a fry having a weak swimming ability in a fish-culture aquarium,
The purpose of this is to prevent the fry from dying due to the water components such as ammonia that are sucked into the drainage outlet and cannot be separated, and to increase the survival rate of the fry.

[0008]

In the fish tank according to the present invention, a drainage basin or pit is widely provided on the bottom of the breeding tank, and sand of an appropriate size is put therein according to the size of the fish. By installing a water level adjusting pipe on the extension line of the drainage pipe provided at the bottom of the pit or the pit, or by installing this water level adjusting pipe in the water level adjusting tank connected to the drainage pipe, the raw water can be continuously supplied. The fish culture aquarium is constructed by making it possible to adjust the water level outside the aquarium while supplying water to improve the water quality in the aquarium.

[0009]

The fish tank according to the present invention is such that sand is put in a pit or a pit provided on the bottom surface of the breeding tank. In order to reduce the number of coarse and dense voids, the grains of the sand are aligned so that there are many voids between the sands. Has excellent water permeability.

The plane of the drainage basin or pit containing the sand is
Since it can be widely taken on the bottom of the breeding tank and filtered in a wide range and the flow velocity on the bottom of the breeding tank is made gentle, the plane of the basin or pit is a cross section of the drainage pipe provided at the bottom of the outlet. It is made extremely large with respect to the area of, and there is a sand layer with a lot of voids containing sand particles of the same size, which does not change coarsely and densely, so that a gentle flow velocity can be obtained at the bottom of the breeding tank. There is something. Therefore, according to the present invention, it is possible to easily keep the flow velocity of the water entering the sand layer from the breeding tank gentle and prevent the fry from being sucked.

Since sand is put in the pit or pit, the sand can be reused repeatedly by washing with water, and since the sand layer has a high porosity, clogging between sand grains does not occur, It is easy to discharge toxic components in water such as Ammonia in a wide range.

By eliminating the overflow, the adsorption of fry is eliminated. A water level adjusting pipe is provided on an extension of the pipe at the bottom of the breeding tank, or a water level adjusting tank is connected to the pipe, and a water level adjusting pipe is provided to this so that the water level of the breeding tank can be adjusted externally. There is.
Since the drainage of the breeding tank was made to pass through the valve provided from the outlet of the breeding tank to the outside, adsorption of fry such as overflow did not occur, and it was possible to perform both water level adjustment and drainage of the aquarium. It is a thing.

[0013]

Embodiments The accompanying drawings illustrate embodiments of the fish-culture tank according to the present invention. An embodiment of the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, sand is put in a pit or a pit, a drainage pipe is provided at the bottom of the outlet, and a water level connected to the pipe is provided. A cross-sectional view of the fish-culture aquarium of Example 1 in which the water level is adjusted outside the water storage tank by an adjusting pipe, and FIG. 2 is a water level adjustment in which sand is put in a pit or a pit and is connected to the pipe. The water level adjusting pipe provided in the tank is used to adjust the water level externally, and the outlet of the water level adjusting pipe is connected to the drainage pipe. There is.

Example 1 A basin or pit 3 is widely provided on the bottom surface of a breeding tank 2 which allows water to flow in from a water injection pipe 1, sand particles of approximately the same size are put in the pit or pit 3, and a pipe 4 is placed below the outlet. This is a fish-culture aquarium in which the water level of the breeding tank 2 is adjusted externally by providing the water level adjusting pipe 5 and the valve 6 on the extension line of the pipe 4.

Example 2 A basin or pit 3 is widely provided on the bottom surface of a breeding tank 2 in which water is made to flow in through an injection pipe 1, and sand of approximately the same size is put therein, and a pipe 4 is placed below it. A water level adjusting tank 7 and a valve 6 are respectively provided on the extension lines of the pipe 4, one of the water level adjusting pipes 5 is provided so as to open in the water level adjusting tank 7, and the other of the water level adjusting pipes 5 is provided. It is a fish-cultivating aquarium in which the water level of the breeding tank 2 is adjusted externally by connecting the outlet to the drainage pipe.

The operation of the present invention in each of the first and second embodiments is that water flows from the water injection pipe 1 and collects in the breeding tank 2, and water in the gaps in the sand layer in the pits or pits 3 widely provided on the bottom surface is filled with water. , And harmful components such as Ammonia are discharged. The water reaches the water level adjusting pipe 5 from the pipe 4 of the pipe, and the water level accumulated in the breeding tank is adjusted by freely adjusting the height of the water level adjusting pipe 5, and when the valve 6 is opened, the water is drained to the outside. To be done.

Particularly, in the second embodiment, as shown in FIG. 2, the water once stored in the water level adjusting tank 7 connected to the extension line of the pipe 4 is discharged from the water level adjusting pipe 5. .

The water passing through the basin or pit 3 widely provided on the bottom of the breeding tank 2 becomes a sand layer and becomes gentle, and the amount of water flowing there per unit time is the amount of water discharged from the water level adjusting pipe 5 per unit time. Since it corresponds to the amount of water, the flow velocity passing through the plane of the pit or pit 3 is not accelerated and is gentle, so that fry is not adsorbed and growth of fry is not hindered.

[0019]

EFFECTS OF THE INVENTION The effect of the present invention is to provide a wide pit or pit at the bottom of a breeding tank and put reusable sand with even grains therein to reduce the mortality rate of fry having weak swimming ability. Since it is easy to discharge toxic components such as ammonia from the plane of the sand through the voids of the sand grains in the middle layer, it is possible to provide a fish-culture tank with a high growth rate of fry. Since a biofilm with water permeability is created on the surface of the sand layer, not only fry but also 200 μm to 3 μm in size.
Even if a juvenile shellfish called 00 micron is raised, there is an effect that the juvenile shellfish does not flow out through the void in the sand layer.

[Brief description of drawings]

[Figure 1] Cross-sectional view of the fish tank

[Fig. 2] Cross-sectional view of a fish tank with a water level adjusting tank

[Explanation of symbols]

 1. . . Water injection pipe 2. . . Breeding tank 3. . . Masu or pit 4. . . Drainage pipe piping 5. . . Water level control pipe 6. . . Valve 7. . . Water level control tank

Claims (2)

[Claims] 1. A basin or pit for drainage is widely provided on the bottom surface of the breeding tank 2, sand corresponding to the size of the fry is put therein, and a pipe 4 is erected from the lower portion of the sand to the outside of the aquarium, and A fish-culture aquarium characterized by being provided with a water-level adjusting pipe 5 for keeping the water level and performing drainage. 2. A drainage basin or pit is widely provided on the bottom of the breeding tank 2, sand corresponding to the size of the fry is put therein, and the pipe is erected outside the aquarium with a pipe 4 from its lower part and connected to the pipe. Is provided with a water level adjusting tank 7, a water level adjusting pipe 5 for maintaining the water level of the breeding tank is provided, and the other of the water level adjusting pipes is connected to the pipe for draining. Fish farming tank.