What is the purpose of filling the tank with air?

The purpose of filling the tank with air is to:

As the temperature rises, the dissolved oxygen in the water decreases, and the water surface comes into contact with the air, and more dissolved oxygen is introduced, so air is introduced into the tank

The solubility of the gas decreases with the increase of temperature and increases with the increase of pressure, so the temperature rises when the weather is hot, so the dissolved oxygen in the water also decreases, so the fish have to get closer to the surface of the water to breathe more oxygen;

The fish in the fish tank need a small amount of oxygen dissolved in the water to carry out respiration, and the oxygen is not easy to dissolve in water, and the amount is relatively small, so it is necessary to often introduce air into the fish tank to supply the fish with breathing, and avoid the fish from suffocating and dying due to lack of oxygen

People breathe with their lungs to obtain oxygen from the air, which is necessary to sustain life. Like humans, fish need oxygen to stay alive. Fish are through gill respiration to obtain oxygen dissolved in the water, there is only a small amount of water in the small fish tank, the oxygen contained is very limited, often not enough for the fish to consume, the purpose of the air into the fish tank is to supplement oxygen, to ensure the oxygen content in the water, in order to benefit the life and health of the fish.

It's the water that's filled with air, for the fish to breathe.

Oxygen is not easily soluble in water, but a very small amount of oxygen can enter the water to keep the oxygen in the bathtub sufficient.

In addition, air can be introduced to keep the atmospheric pressure inside and outside the bathtub stable.

Produce oxygen! Otherwise, the fish will be suffocated.

I can live, but I don't feel comfortable living. The cylindrical fish tank is not good for the eyes of the fish and will be blind.

Goldfish, koi fish, are ornamental fish that look down on the most basic concept, and you are mistaken, and the cylindrical tank will put unnecessary water pressure on these fish, which will affect their growth or survival, and whether they can eat or not, let's not talk about whether they can eat or not.

If there is not enough oxygen in the tank, turn it over immediately, and you should be able to eat it, hoping to help you.

The main reason should be that the water quality is easy to deteriorate, the microorganisms and algae in the water are more active in hot weather, the goldfish themselves are also more active, there is no filtration or the filtration system is weak, it is easy to burst algae in the tank, and the water quality is difficult to maintain stability, it is recommended to establish a complete filtration system (including effective filter materials and nitrifying bacteria).

Of course, the water temperature should not exceed 28 degrees; Do not raise fish in round glass tanks; Eat small, frequent meals.

The trick of raising goldfish is to explore, from simple to difficult. First of all, it is better to raise grass goldfish. If you can keep it, try the dragon's eye again, and finally try the lion's head and the tall head or Lanshou. If a novice chooses a relatively delicate breed from the beginning, it will only increase their psychological burden.

Don't be superstitious, the carp jumping over the dragon gate or something is fake, don't think about getting rich, it's true to live well.

You can go to Zhou Gong's interpretation of dreams to take a look.

You can buy this week's public dream interpretation to see.

This is obviously suffering from erection of scales, and then according to the recommended way** maybe there is salvation.

What do you usually feed goldfish?

Well, it should be the upward and downward air exhaust method, not the drainage method.

The upward air exhaust method is to put the bottle in the middle of the bottle, and use a gas denser than the air to pass into the bottle, so that the density will sink downward. And the air was expelled.

Shoot down the air is to invert the bottle, into the air is less dense than the air, the gas floats upward, then the gas is squeezed out, the drainage method is to fill the bottle full of water to buckle in the sink with water, and then through the air, the water is squeezed out, please adopt, dear, pure hand, do not understand can be asked.

When the density of the gas to be collected is less than the density of the air and is insoluble in water, the downward air exhaust method is used; When the density of the gas to be collected is greater than the density of the air and it is insoluble in water, the upward air exhaust method is used.

The drainage method, i.e., the method of collecting gases by drainage, is a method of collecting gases in experimental chemistry. This method is used when the gas does not react with water and is not easily soluble in water.

It's too dangerous!!

This can kill the bacteria in the water, but it cannot achieve the purpose of disinfection, and it is necessary to clean the fish tank with potassium permanganate solution or sea salt.

Practice is the only criterion for testing the truth, and you can just take a sip after you finish the electricity without diarrhea.

As the name suggests, the drainage method drains the water, and the experiment is completed by air pressure, pressing the gas into the bottle, and then pressing the water out of the long pipe below, so it is short in and long out.

The upward air exhaust method is to remove the air from the top, and keep the required gas in the bottle, and the retained gas must be denser than the air to complete the experiment, so that the heavier gas is left at the bottom and the light air is squeezed out.