Why is it necessary to change the bottom in the aquaculture process?

The bottom reform helps to create a good water environment and promote the growth of aquatic organisms. When the substrate pollution is serious, it will cause poisoning and flooding, which will cause huge economic losses to aquaculture production.

The main purpose is to improve the overall breeding environment, which can avoid the production of a lot of bacteria and can also avoid the pollution of the water body.

Improve the substrate of aquaculture water. The bottom of most of the aquaculture water body is thicker than the silt, coupled with the accumulation of residues, manure, grass residue, dead algae and undissolved phosphate fertilizer and other substances under our usual time, the bottom of the aquaculture water body contains a large number of toxic and harmful substances based on nitrogen, phosphorus, carbon, sulfur and other elements, these things on the one hand serious oxygen consumption, pull down the overall dissolved oxygen level of the aquaculture water.

Summary. Hello, in aquaculture, in addition to bottom modification and disinfection, there is also detoxification, the relationship between the three is inseparable, mainly according to the use cycle of the pond, the weather to determine. These three steps are very important, and they can be said to be basically essential.

First, the bottom of the pond is very critical, because the pond after long-term use, a variety of aquatic feed, manure and other residues and organic particles sink into the bottom, wintering can be applied to the role of fertilizer, and so on to the hot weather, these organic matter will be fermented and rotten at the bottom, causing the breeding of various microorganisms, and will produce a large number of harmful gases, the impact on aquatic products is very large. It's pH and replenishes beneficial bacteria. There are three main methods here, physics, chemistry, and biology.

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We'll be happy to answer for you. Aquaculture should be bottomed out and then disinfected.

Hello, in the aquaculture knowledge closed, in addition to the bottom and disinfection, there is also detoxification, the relationship between the three is inseparable, mainly according to the use cycle of the pond, the weather to determine. These three steps are very important, and they can be said to be basically essential. A containing, pond bottom change pond bottom is very critical, because the pond after long-term use, aquatic feed, feces and other residues and organic particles sink into the bottom in large quantities, wintering can be applied to the role of fertilizer, and so on to the hot weather, these organic matter will be fermented at the bottom of the old crack decay, causing the breeding of various microorganisms, and will produce a large number of harmful gases, the impact on aquatic products is very large.

It's pH and replenishes beneficial bacteria. There are three main methods here, physics, chemistry, and biology.

Hello, the following is the pond aquaculture cleaning operation technology: 1 Pond cleaning treatment This is to pump the pond water after a breeding cycle, and then dig out part of the thick silt at the bottom, and then retain a part. Generally, when the pond is cleaned and disinfected, we can use quicklime to disinfect.

According to the actual situation, the amount of quicklime used is determined, and the pond treatment is also carried out. Of course, you can also open the oxygen machine to allow the upper and lower parts to exchange oxygen, which can be conducive to the reproduction of beneficial bacteria. The chemical treatment method is to use quicklime, which can also provide them with calcium, which is mainly carried out in combination with the type of aquaculture and the pH of the pond.

2 Disinfection The quality of sterilized products is really uneven. There are many manufacturers that produce unreliable, we mainly use quicklime when clearing the pond, this is more effective than the disadvantages of Huanchong friends, and you can also use some chlorine-containing disinfectants. Disinfection should be done regularly, and disinfection should be carried out consistently.

3 Detoxification work People who have farmed aquatic products basically know the importance of detoxification, why should they detoxify? Because some of the residual drugs have an effect on the metabolism of aquatic products, the detoxification drugs now have amino acids and organic acids.

It is not possible to directly change aquaculture to be treated and improve the breeding environment.

Livestock and poultry breeding is banned, how to switch to aquatic products.

After the ban on livestock and poultry breeding in Zhaoqing and Sihui, many pig houses are facing the fate of demolition, and everyone begins to pay attention to aquaculture. Long-term livestock and poultry breeding, most of the farms around the water quality has been seriously damaged, intensive aquatic products also put forward higher requirements for farmers, the restoration of water quality, the selection of breeding varieties and the change of breeding concepts, these take time. Combined with the actual situation in Zhaoqing, Sihui and Qingyuan, as far as the choice of species is concerned, it varies from person to person, and farmers with conditions can breed raw fish and California perch, and those with relatively weak anti-risk ability can choose to breed four large fish.

After the ban on livestock and poultry breeding, we will switch to grass carp, do four details, and take a ride on high fish prices.

Here, combined with the excellent experience of many grass carp breeding customers, I have summarized and refined four key points for the reference of beginner customers: 1. Pond treatment; 2. Pond intake, water quality treatment, fertilizer water, and fish fry water testing; 3. Seedling inspection, transportation and ponding; 4. Taming and daily management.

For the first time to raise grass carp, we must do a good job in these four details.

1. Pond treatment.

Long-term livestock and poultry farming, most of the farms around the rivers and ponds accumulate a large amount of manure, soil and water quality is seriously damaged, while grass carp farming needs better water quality. The following four options are recommended to improve the pond environment:

1. Dredging: The excavator is used to clean the silt quickly, thoroughly and effectively. For customers who are inconvenient or in a hurry, excessive sludge can be pumped out with a sludge extractor.

2. Trimming the pond foundation: repairing the pond foundation with water seepage and leakage is conducive to improving the water level and water storage.

3. Drying pond: 15 days of exposure to the sun, cracking, the bottom mud from gray black to gray white, ultraviolet disinfection and sterilization, the organic matter at the bottom of the pond is fully in contact with the air, oxidizing most of the toxic and harmful reducing substances, and compensating for the oxygen debt in the breeding process.

4. Quicklime pond (200 pounds of mu), quicklime has the effect of disinfection and sterilization, improving the alkalinity of the soil, which is conducive to the growth of fish, and can also improve the hardness of the water body, which is conducive to the reproduction of algae in the later stage to make the pool water fertilized. Quicklime eventually becomes calcium carbonate precipitation when exposed to water, which cements and precipitates suspended organic matter, clarifies the pool water, increases the transparency of the water, strengthens the photosynthesis of phytoplankton in the water, and increases the amount of dissolved oxygen in the water.

1. The role of substrates in aquaculture.

Harm: there are a large number of organic matter such as bait, feces and dead biological remains in the sediment of the breeding pond, the sediment continues to accumulate in the pond, and a variety of organic substances contained in it consume a lot of oxygen in the process of spoilage bacteria, so that the whole pond, especially the bottom is hypoxic, resulting in the water body becoming black and smelly, and producing ammonia nitrogen, nitrous nitrogen, methane, hydrogen sulfide and other toxic substances, resulting in anoxic floating head of aquatic animals, easy to break out diseases, slow growth, high mortality rate.

Benefits: It is advantageous to have a suitable thickness of silt at the bottom of the aquaculture pond, and the sediment contains a large amount of nutrients. These nutrients need to be transformed by beneficial microorganisms before they can be absorbed by algae and thus turned into useful fertilizers.

A certain thickness of silt can play a role in fertilizer supply, fertilizer conservation, regulation and buffer of pond water quality mutations.

Second, how to correct the bottom of the farmer?

1. Use microbial preparations (decomposition bottom modification king). (1) Achieve the purpose of reducing spoilage and harmful bacteria through competitive inhibition, and then reduce the emission of toxic substances; (2) Through the decomposition of probiotics, the accumulation of organic matter is reduced, and the deterioration of substrate and water quality is reduced; (3) Use probiotics to convert the bottom potential fertilizer (organic matter) into algae nutrients to improve the utilization rate of base fertilizer. (4) Promote the "balance of bacteria and algae", which can make the water body stable for a long time and conducive to the healthy growth of farmed animals.

2. Cooperate with biological agents to use oxygenation base modification. The use of oxygenation can promote the complete decomposition of organic matter at the bottom and reduce the emission of toxic gases such as ammonia nitrogen and nitrite, especially hydrogen sulfide. When there is too much sludge at the bottom or the old pond is not silted for a long time, open more aerators in time to reduce the deterioration of the bottom and cause problems such as algae inversion and floating head.

3. When the long bottom of the water body is in a state of deterioration for a long time, and the number of harmful bacteria in the water body is large, the harmful bacteria in the bottom water body should be reduced first, and then biological agents or biological bottom modification products are used, which is more conducive to the formation of beneficial bacteria to form a flora advantage, and the bottom modification effect is better.

4. Cultivate beneficial algae. With the increasing amount of organic matter such as excreta and bait, sufficient dissolved oxygen is necessary to degrade these organic matter. The organic matter of the water body and sediment undergoes oxidation reaction under the condition of sufficient dissolved oxygen, and the organic matter becomes less and less; In the case of hypoxia, the reduction reaction is carried out, and there are more and more harmful substances.

80%** of dissolved oxygen in the pool is used for phytoplankton photosynthesis. Therefore, the cultivation of good algal phase is the core of stabilizing the ecological environment of ponds, and it is also a favorable condition for improving the substrate.

Because all the manure and residual feed accumulate at the bottom of the pond and decay under the action of microorganisms. The result of the decay is that the putrefaction poisons the water body at the bottom and absorbs a large amount of oxygen from the water body. In severe cases, it will cause hypoxia in the water body (especially in rainy days), and it will also occur in the time of low air pressure, that is, the bottom pollutants will float and spread to the entire aquaculture water body, resulting in the pollution of the entire water body.

Such a water body is easy to cause poisoning and infection of farmed animals, and at the same time, due to the lack of oxygen content of the water body, it directly affects the growth retardation of animals.

Therefore, the cultivation of aquatic animals (especially animals that are active on the bottom of the water) should pay great attention to the management of the substrate (subbase).