Can the fish tank not be changed for a year? How to change the water in the fish tank?

The fish tank can't be changed for a year. Not changing water will lead to water quality aging, affect the health of fish, and even make them grow up. Usually, you can change the water once a week or two, and change it by one-fifth to one-quarter at a time. When changing water, do not pour fresh water directly, but change it slowly from the wall of the pond, which will not cause fluctuations in water quality and water temperature, and is very helpful to the health of fish. First, can the fish tank not be changed for a year? It's impossible not to change the fish tank for a year. If the water is not changed for a long time, the water quality will age and the concentration of some harmful substances in the water will increase, which is not good for the health of fish. Even if it can survive, it will develop into an old fish, which will not look good when it grows up. Usually, according to the maintenance of water quality, water should be changed once every one to two weeks. If there are too many fish and the water quality deteriorates rapidly, it should be changed every five days.

Second, how to change the water in the fish tank to 1 and get trapped in advance: to change the water in the fish tank, you must use trapped water, so you need to be trapped in advance. Generally, before changing the water 1-2 days, connect the water and put it in a sunny place to bask in the sun, so that the chlorine in the water can volatilize and avoid harm to the health of the fish.

2. How much water to change: Generally, the amount of water to be changed is about one fifth to one quarter. If you don't change the water frequently, you can change it a little more at a time, but not more than one third of the total water. Changing water too much will stimulate the fish, which is not good for your health. Changing too little water will not improve the water quality.

3, water change method: do not change the water violently, directly pour the new water into the fish tank. It is necessary to pump out the old water with pipes first, and then slowly pour in new water from the wall of the pond, so as not to cause fluctuations in water temperature and quality, and the fish can adapt to the new water.