How many fish die every time the water in the fish tank is changed, what should I do?

Before changing the water, some water should be placed in the same environment as the fish tank to keep the water in the fish tank consistent with the original water temperature, if the temperature difference is too large, the fish will catch a cold. Place the water for at least one day and night in winter, and at least 12 hours in other seasons. One is to keep the water temperature consistent; The second is to discharge some of the additives in the tap water into the natural environment.

Every time you change the water in the fish tank, you should try to disturb the fish as little as possible, use a plastic hose to suck out the impurities in the bathtub using the siphon principle, and add water slowly.

In summer, you can change the water once a day after feeding for 1 hour, once every 3 days in spring and autumn, and once a week in winter. But this is not absolute, but also according to the water quality in the fish tank to adjust the water change cycle, the water is dirty fast, you have to change more frequently. No more than half of each water change in the summer and no more than a third in other seasons.

It's good to feed once a day, and the amount is specifically mastered to let the fish eat within 5 minutes, and if you can't eat more, it will affect the cleanliness of the water quality, and the goldfish don't know how hungry they are, and they will die.

It is best to make good water on the first day when you need to change the water, the water is too alkaline, as the saying goes: water is hard. There is also a certain amount of alum that can be put less. It seems that the taste of the bleach in the tap water can be reduced. I've been raising goldfish for two years and they're all fine.

Do you change the water every time? If so, it's more normal and your fish is more sensitive (or weak) to water. In fact, the correct water change is to replace the water at the bottom of the fish tank, the water at the bottom is generally dirty, the fish excrement and food residues are there, the replaced water generally can not exceed the original (old water retention) one-third, if it is not necessary, the bottom quarter of the dirty water can be pumped out and added to the clean water.

Because the new tap water also contains a large amount of disinfectant such as chlorine, these substances are harmful to the fish, so it is easy to die every time the water is changed).

If the fish has not been dead for a long time and has not polluted the water in the fish tank, there is no need to change the water, and the water can be changed according to the previous water change frequency. If the fish has been dead for a long time and has polluted the water quality (water mixing), insist on changing the dried tap water for 2-3 days, 3-4/1/4 per day. In the near future, it is necessary to observe more to prevent the dead fish from spreading the germs to other fish.

The following is for reference.

If the fish is fished out immediately after the fish tank dies, it will have little impact on the water quality.

Appropriate water change one-fifth is more safe.

If the fish in the tank is dead for a period of time, it will have a greater impact on the water quality, and it is recommended to change the water every few days.

Summary. Kiss, good evening, I'm happy to answer for you: it is recommended to change the water once every 3-7 days, and some people will say that it is okay to change the water for more than a month, I feel that there is no standard answer, different fish tanks, different fish species, there will be different methods.

It is not recommended to change the water in the first month of the newly opened fish tank, and how often the water in the fish tank needs to be changed is not easy to die.

It is the kind of fish that is sold as a freshwater fish.

Kiss, good evening, I'm happy to answer for you: it is recommended to change the water once every 3-7 days, and some people will say that it is okay to change the water fish for more than a month, I feel that there is no standard answer, different fish tanks, different fish species holes, there will be different methods. It is not recommended to change the water in the first month of the newly opened fish tank, and it is better to change the water every night before closing the stall.

Yes, the water temperature suitable for most fish is 20-24 degrees Celsius, and the breeding period is 25-28 degrees Celsius. The water temperature should be maintained at 20-30 degrees Celsius for tropical fish and 18-25 degrees Celsius for temperate fish.

We sell fish, and I see that some merchants add ice to the fish shortage, but I don't know what it means.

Because the ice will keep the fish fresh.

It is directly added to the tank with tap water that has not been trapped. The solution is as follows:

1.Do not use tap water directly, change the tap water to water that has been left for three days, and the chlorine can be removed before it can be used by the fish.

2.Don't change the water too much, change it 1 3 at a time, otherwise the fish will be uncomfortable.

3.The temperature of the new water and the water in the fish tank should be about the same, at most two degrees worse, the fish will be irritated and will die, so put the new water next to the fish tank for a few hours before changing the water.

It may be caused by the following reasons: regret.

1. The water change of the whole tank can only be carried out when the fish is treated, and in the usual management, the car should be avoided as much as possible to avoid the water change of the whole tank. Because the fish have adapted to the water quality in the tank, the water quality will change suddenly when the water is changed in the tank, making it difficult for the fish to adapt, and the old water environment will be damaged.

2. Tap water should be dried or dechlorinated. If the fish you raise have high requirements for water quality, the hardness of the water can be mixed with boiled water to reduce the hardness, if the pH is not suitable, you can use pH high adjustment agent, pH low adjustment agent to adjust to the required pH value environment;

3. It is best to combine water change with decontamination. When using a straw to suck water outward, try to suck out the dirt from the bottom of the tank. If there is an oil film or other floating objects on the surface of the water, use a tea jar to skim it out as much as possible. If you have small fish such as peacocks, you should be careful not to take the fish out of the water change.

1. Changing the water in the whole tank will change the water quality suddenly, making it difficult for the fish to adapt, and the old water environment will be damaged, and the fish will not be able to survive in the new environment.

2. The physical and chemical properties of the new water change are inconsistent with the growth conditions of the fish.

Tap water should be dried or dechlorinated. If you raise fish with high water quality requirements, the hardness of the water can be reduced by mixing it with boiled water; If the pH is not suitable, you can adjust the pH level environment to the desired pH value with pH raiser and pH lowering agent.

3. The difference between the temperature of the added water and the water temperature in the tank is too high, and it should be controlled within 4 degrees normally.