Canvas galvanized pipe fish pond
I said before that this year I can only get a small round galvanized tube canvas fish pond high-density circulation fish farming system, today I will talk about the gains and losses of this month, and continue to discuss the use of canvas galvanized pipe fish ponds to raise fish Is it possible to make money.
Two 4-meter-diameter galvanized pipe circular canvas fish ponds, 1.4 meters high, each filled with 15 cubic meters of water, use external water intake and floor drain drainage.
The water inlet pipe is a 50-diameter PVC pipe, the water pump is a 70W high-flow pump, and the drain bottom pipe is a 75-diameter PVC pipe. The actual operation proves that this configuration is sufficient.
The two previous fish tanks have been converted into the main purification tank, and the foam boxes for raising shrimp on both sides have not been changed much, and black-shelled shrimps continue to be kept inside. There are two filters installed at the outlet. After running for so long, they are not effective. They are mainly used to filter fish feces and suspended solids. They are still qualified, but the price is a bit expensive.
There are also three sub-purification ponds, which are also used from the previous fish ponds, so I won't specifically picture them here.
This is the aeration of the main purification tank, which is a bit rudimentary, so let’s make do with it, and I don’t want to invest too much money. An aeration pump costs more than 2,000 yuan, and a special aeration tank needs to be configured. This investment is a bit painful, so it is useless.
Now let's talk about the experience of the canvas galvanized pipe fish pond circulation fish farming system for a month, which is a little more experience in fish farming, about this canvas fish pond.
One fish pond raises Dinggui carp and grass carp that have been raised for a long time last year. There are more than 300 dingo carp, the small ones are more than one or two, and the big ones are more than one. There are 8 grass carp of more than eight taels, and more than 60 grass carp fry of 10 centimeters.
It has been raised for a month, and the dingmangus is growing very well. It feels better to feed it with the sinking pellet feed prepared by myself than the commercial pellet feed.
During the period, 5 grass carp fry with a size of 10 cm died. After inspection, there was no disease, but they were thin. I was very puzzled at the time, and only guessed the reason a few days ago.
This canvas fishpond with duckweed is mainly used to raise grass carp.
I bought 5,000 Hehua fry and gave 500 as a gift, but I didn’t count them. I estimated that it was about the same. When I unpacked the bags, there were not many hanging, less than 100. From the perspective of survival, this online shopping is okay. Yu Miao's size is too small. I bought 2-4 cm fry, and all of them were 2 cm. When I saw such a small fry, my first reaction was: It's too bad, can it be fed?
Before the fish fry entered the pond, I immediately corrected the first design problem of the canvas fish pond: the fish toilet provided by the manufacturer has a large leak hole diameter, and the fish fry can run out easily, so I hurriedly made a barbed wire cover by myself, and then raised the water depth to 1.3 meters.
The previous week was pretty good, the fry grew very fast;
In the second week, it was very good, and the fry grew faster;
In the third week, they started to hang up in batches. . . . . . It was so miserable that I was about to cry. Until a few days ago, I was still hanging fish fry in batches.
Now feed the remaining fry, probably less than 3,000, and I regret it to death. The fry are still hanging one after another.
To sum it up: (this is the key point)
1. Compared with traditional fish ponds, canvas galvanized pipe fish ponds are easy to drain and control diseases, and the oxygen content in water is easy to maintain, but the cost is high. A set of equipment is really not cheap, even if it is me It hurts to be so lavish.
2. The water intake and drainage methods of canvas galvanized pipe fish ponds are completely different according to the size of fry. Way to the canvas pool. This is why I want to cry. The problem of fry topping water that can be ignored in the traditional fish pond farming mode is a fatal problem in canvas fish ponds that use floor drain drainage. top water! top water! top water! The important thing is to say three times, the Hehua fry with a size of 4 cm like top water the most. The fry did not die of illness, they were all exhausted! ! !
3. According to the different sizes of the fry in the two fish ponds, I made a rough estimate. The floor drain drainage mode can be used for the fry above 10 cm, but the frequency of feeding should be strengthened, and the nutrition must be kept up. For fry below 10 cm, do not use the floor drain to drain, but must use the overflow type. This is personal experience, and it is aimed at the three types of Hehua carp, grass carp and Dinggui carp. Guess, if it is a raised mouth, it is estimated that the floor drain is the best, right?
