How many days can a fish in a fish tank live without changing the water

Depends on what species of fish, such as guppies, ......It can be changed once every half a month, if it is a goldfish, it is ......It has to be changed every two or three days, and the most important thing is to see the resistance of the fish.

I haven't changed the water in the fish tank for 2 years, and it is recommended to use it daily (imported from Taiwan) Quick-acting Yuerbao Usage: Feed addition method: 1-3 fast-acting Yuerbao per 1000 feed

Feed is mixed with fast-acting fish and fed. Water quality control method: 1 acre of breeding pond every 7-10 days to put fast-acting fish treasure 1-2, climate drastic changes nitrite acid and sulfide gas poisoning release method, emergency investment with 3-5 fast-acting fish treasure.

The environmental epidemic is lifted, and every 1 acre of land is invested in the breeding pond with quick-acting fish treasure 3, which is used with other materials. Effect after use: 1. Promote digestion and absorption, improve the feed meat exchange rate; 2. Inhibit the generation of harmful bacteria and pathogens; 3. Help the rapid generation of algae and plankton; 4. Quickly improve and stabilize water quality and prevent water quality from deteriorating; 5. Conversion and inhibition of nitrous acid and sulfide gas; 6. Enhancement of photosynthesis; 7. Re-decomposition of residual bait to prevent the formation of spoilage bacteria and inhibit anaerobic reaction; 8. The breeding rate is improved, the meat quality is improved, and the carcass drug residue is reduced; 9. The drug can be used in a reduced amount to prevent the formation of pathogen resistance; 10. Prevention of epidemic infection and prevention of expansion; 11. Accelerate the growth of cultured animals, shorten the breeding period and increase profits.

Main ingredients of the product: 1. Link complex bacterial family: denaturation link system torula;; lactobacillus；secondary link aspergillus; aspergillus；penicilloides；actinomycetes。

2. Proteolytic enzymes, lipolytic enzymes, fibrolytic enzymes, and starcholytic enzymes. 3. Organic acids, trace elements, and high-efficiency cell activation substances. 4. Integrated dosage form (three-in-one biological agent).

Precautions: 1. The heat resistance of the fungus is 9030 points, 70

72 hours does not affect its biological activity and efficacy. 2. The bacterial action temperature can be from 5 to 50, and the optimal temperature is 18 to 43. Shelf life:

1 year and 2 months to prevent dampness.

It mainly depends on how big the tank is and what species of fish it is.

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.

If the fish tank does not change the water for a year, the fish tank will not change the water for a long time, which will lead to the accumulation of a lot of toxic substances in the water, which is not good for the health of the fish and is easy to make the fish suffer from diseases. The frequency of changing the water in the fish tank once every half a month is the best, and the frequency is too high or too low to harm the fish. The new water needs to be dried before it can be replaced.

It is not possible to change the water in the fish tank for a year, and the water quality will deteriorate if the fish tank is not changed for a long time. Toxic substances accumulate in the water, which is not good for the health of the fish in the tank and can cause diseases in the fish.

The frequency of changing the water in the fish tank is controlled once every half a month, if the frequency is too high, it will cause the fish to have a stress response, resulting in disorder and disease. If the frequency is too low, toxic substances accumulate in the water, which affects the health of the fish.

Fish tanks generally change the water once a week, fish tanks with a size of more than 60 cm change the water each time 1 3, fish tanks with a size of 40-60 cm change the water 1 4 each time, and smaller fish tanks are changed 1 5 each time. Do not use tap water directly to change the water in the fish tank, you need to boil the water and let it cool before adding it to the fish tank.

Generally speaking, the fish tank needs to change the water once a week, and each time the water is changed, it is very suitable to change only 1 5 1 3. If the water is changed too much, the balance of the ecosystem inside the tank will be disrupted, and both fish and plants will not be able to adapt.

For fish tanks with a size of more than 60 cm, because the water quality is relatively stable and the water body does not fluctuate much, it can be changed to 1 3 water bodies each time. For fish tanks with a size of 40-60 cm, because the water quality is not stable enough, the water body fluctuates greatly, so you can change 1 4 water bodies each time, and if the fish tank is smaller, you can change 1 5 water bodies each time.

At each water change, you need to use a straw to suck out the dirt from the bottom of the fish tank. Do not change the tap water directly, it is best to boil the tap water and let it cool before adding it to the fish tank. Tap water contains a lot of bleaching powder and chlorine, which is extremely harmful to fish.

The water change time of the fish tank should be determined according to the situation, under normal circumstances, the water in the fish tank should be changed once a week. If it is during the change of seasons or the water quality is relatively poor, the water should be changed once every three or four days, and the amount of water to be replaced should be increased.

Points to note for changing the water in the fish tank:

1. Water exchange: Every time you change the water, you don't have to change all the water each time, only 1 5 1 3 water, so that the fish will adapt to the new water quality faster and there will be no discomfort.

2. Change the water temperature: pay attention to the water temperature when changing the water, the temperature difference between the new water and the old water should not exceed 3, otherwise the fish will be uncomfortable, and the probability of getting sick will exceed 30.

3. PH value: PH value changes greatly and also harms the fish a lot, before raising a certain kind of fish, you must know the water temperature and pH value, water hardness, etc., first adjust the water to a suitable environment for the survival of the fish, and then change the water will be better.

Water change method:

1. Trap water in advance.

Before changing the water for fish farming, the first thing to do is to prepare new water. It is good to choose tap water for new water, but tap water contains a small amount of chlorine, which is not good for the health of fish, so it is necessary to remove chlorine by trapping the water. After the tap water is connected, it is dried in the sun for about 1-3 days to allow the chlorine to volatilize cleanly.

The water temperature of the new water and the old water should be as consistent as possible, ensuring that the temperature difference is within 1-2, and not causing a sudden change in the temperature of the water body.

2. Clean the fish tank.

Before changing the water, turn off the water pump, and after the water level is still, use a fish tank brush to wipe off the feces, food residues, algae, etc. attached to the bottom of the fish tank, which can basically wipe most of the algae, feces and other garbage.

After 10 minutes of wiping, all kinds of garbage will slowly scatter and settle at the bottom of the fish tank, and then it can be easily pumped out through the water change pipe.

3. Pumping and adding water.

Pump out the old water in the tank, if it is a large fish tank, you can use a water pump to pump water, and prepare a pipe for a small fish tank, and use the siphon method to pump water. When pumping water, the bottom water should be pumped, so that the fish feces, residual feed, and garbage at the bottom of the fish tank can be sucked away at the same time, so as to achieve the purpose of cleaning the bottom of the fish tank.

After the pumping is completed, you can add water, slowly inject new water into it from the tank wall, and do not change the water violently. Special attention should be paid to the new water to avoid washing on the fish body, so as not to damage the water quality environment in the original fish tank. After the water change is completed, you can turn on the pump and apply oxygen.