CATDOLL : CATDOLL: Do I need to add salt to tap water when raising freshwater fish?

1. Do you need to add salt to tap water when raising freshwater fish?

Salt needs to be added to tap water when raising freshwater fish.

Additional information:

Purpose of adding salt:

1. Disinfection and sterilization

Different proportions can treat and prevent different fish diseases, mainly for disinfecting bacteria, wheelworms, and oblique tube worms on the surface of fish.

2. Treatment with auxiliary drugs

Salt can promote the absorption of drugs by fish skin, thereby enhancing the therapeutic effect of the drugs.

3. Balance osmotic pressure

The salt content inside and outside the fish's body is different, and there is a certain osmotic pressure. Therefore, adding salt can replenish some of the salt lost due to wounds, or alleviate the fish's inability to adapt to water quality after arriving at a new place, that is, to regulate the osmotic pressure.

4. Purify water

The mechanism of action of table salt is to increase the ion concentration in the water, causing suspended organic particles and colloids to form flocs and settle to the bottom of the pool, thereby reducing dissolved oxygen consumption and purifying the water.

5. Stimulate appetite

In aquaculture, adding an appropriate amount of salt to the feed is often effective. This is because in the physiological process of fish, NaCL as an inorganic salt is necessary to maintain life. Na+ is essential to maintaining the body's osmotic pressure, water balance, and acid-base balance. Na+ can also maintain and improve the excitability of nerves and muscles. CL- is a component of hydrochloric acid in gastric juice. The role of hydrochloric acid is that it can activate pepsinogen, provide the acidic environment required by pepsin, denature the protein in food, and help digestion.

There is no need to add salt when raising freshwater fish with tap water; tap water must be dried in the sun to prevent toxic substances from causing harm to the fish.

Additional information

1. Most urban households raise fish with tap water, but tap water contains chlorine used for disinfection and preservation, which is also a bleaching powder. It is harmful to delicate and sensitive fish and may cause the death of fish.

2. Therefore, under normal circumstances, you cannot use water that has just come out of the tap. The water must be left for a few days until the bleach in the water has completely evaporated before it can be used.

When raising freshwater fish in tap water, you need to add salt. The purpose of adding salt:

1. Disinfection and sterilization

Different proportions can treat and prevent different fish diseases, mainly for disinfecting bacteria, wheelworms, and oblique tube worms on the surface of fish.

2. Treatment with auxiliary drugs

Salt can promote the absorption of drugs by fish skin, thereby enhancing the therapeutic effect of the drugs.

3. Balance osmotic pressure

The salt content inside and outside the fish's body is different, and there is a certain osmotic pressure. Therefore, adding salt can replenish some of the salt lost due to wounds, or alleviate the fish's inability to adapt to water quality after arriving at a new place, that is, to regulate the osmotic pressure.

4. Purify water

The mechanism of action of table salt is to increase the ion concentration in the water, causing suspended organic particles and colloids to form flocs and settle to the bottom of the pool, thereby reducing dissolved oxygen consumption and purifying the water.

5. Stimulate appetite

In aquaculture, adding an appropriate amount of salt to the feed is often effective. This is because in the physiological process of fish, NaCL as an inorganic salt is necessary to maintain life. Na+ is essential to maintaining the body's osmotic pressure, water balance, and acid-base balance. Na+ can also maintain and improve the excitability of nerves and muscles. CL- is a component of hydrochloric acid in gastric juice. The role of hydrochloric acid is that it can activate pepsinogen, provide the acidic environment required by pepsin, denature the protein in food, and help digestion.

1. There is no need to add salt to the water used to raise pure freshwater fish.

2. Some soda fish, such as archerfish, yellowfin pomfret, golden drum, etc. are raised in freshwater, and it is best to add some salt.

3. African three-lake fish is also a freshwater ornamental fish, but it is best to raise it with salt.

4. It is best not to estimate the amount of salt to add, but to measure it accurately with a salinity hydrometer. For soda fish, add about 1.010, and for three lakes, 1.003 is enough.

5. As long as the fish does not jump or there is a cover, the more water you add, the better.

6. The saying that the water is too deep and there is a lack of oxygen at the bottom of the water does not exist in your tank which is only half a meter in depth.

7. Do not add edible salt or coarse salt, but add special salt for aquariums.

Just my personal opinion, after all, I have never kept fish

But I have been to many restaurants and partners, and I have never seen them add salt to the water tank. After all, they are not saltwater fish, and if you add too much salt, the fish will die.

As for the fish tank, it depends on what kind of fish you raise. Catfish are not afraid of anything. For other fish, you can check the characteristics online before making a judgment. In addition, there seems to be special equipment for ventilating fish tanks for sale.

As for adding salt, unless it is marine fish, the amount of salt added is generally determined according to the salinity of ordinary seawater. Middle school chemistry teaches a calculation method.

2. Which freshwater fish is easy to raise?

Freshwater fish are generally divided into native fish, tropical fish and artificial fish. Tropical fish are a type of native fish and need to be heated to keep the water temperature at around 28 degrees. Native fish and tropical fish usually need to be landscaped, and a large amount of bottom sand, water plants, and sunken wood are purchased to arrange the environment for the fish to grow, in order to prevent the fish from fighting and not adapting.

Artificial fish are divided into goldfish and koi. Koi require a large place and a large pond to be raised, while goldfish can generally be raised in a tank of about one meter. Koi and goldfish do not need to be heated, and can survive in water temperatures of over 30 or below the ice. Therefore, the best freshwater fish to raise are goldfish.

Freshwater fish are divided into tropical fish and cold-water fish. Among cold-water fish, koi and goldfish are relatively easy to raise. There are many tropical fish, and the hardy and easy to raise ones include scavengers, mini parrot fish, and fortune fish. They are not picky about water quality and water temperature, and they eat relatively ordinary food.

Families choose goldfish and koi.

3. Breeding methods of freshwater perch

Freshwater perch farming method:

Preparation

Before breeding, pond cleaning and other work are required to prepare for the subsequent stocking. After the staff has determined the breeding site, they need to clean up all the water. In order to improve the breeding effect, this work needs to be completed about 3 weeks in advance.

Selection of fry

There are huge differences in the length of fry of different sizes, the longest may be about 10cm, and the shortest may be only 1cm. In the selection process, you don’t need to pay too much attention to factors such as size, but you need to pay attention to the color and shape of the fry.

Temporary breeding of sea bass

After selecting the fry, in order to improve their survival rate, the breeders need to place all the fry in a 4% salt water for a period of time to determine the actual situation of the fry and ensure their health. This operation process should not exceed 12 minutes.

Stocking of sea bass

In the process of selecting fry, temporary breeding is to make them more adapted to the breeding environment. After completing this task, the net needs to be taken out and the stocking process continues. In this process, 1400 to 1600 fry need to be placed in the pond, and a small amount of crucian carp, silver carp, etc. also need to be placed in the pond.

Water Quality Management

First, improve the effect of water change. During the breeding process, it is necessary to carry out water change regularly to ensure the cleanliness of the water in the pond. After the water change, the oxygen content of the pond needs to be monitored to reduce the impact of the reduction of oxygen content on the perch. Secondly, the oxygen content in the pond needs to be increased regularly.