Generally speaking, fish in the fish tank need to change the water regularly. If the water is not changed for a long time, the water environment in the fish tank will not be suitable for the growth of fish, and may also lead to their lives, or even endanger their lives. After the water in the fish tank is turbid, the water needs to be changed in time. In the case of fish disease, water change is also one of the supplementary treatment measures.
In some special aquariums, the water may not be changed, or the water may not be changed for a long time. However, the aquariums need to have a perfect nitrification system, a good filtration system, and plants such as aquatic plants that can produce oxygen. Even so, you need to do regular cleaning work, such as regular cleaning of filters and so on, which does not mean that you can always let it go.
1. First of all, fish will consume a certain amount of oxygen in the water, at this time, they need to change new water regularly to supplement oxygen. If the water is not changed for a long time, the dissolved oxygen in the water will continue to decline, which may lead to the reduction of fish activity, or even direct death.
2. Fish will also remove feces in the water, plus the residual food residue in the water, which requires us to clean up regularly. By changing the water, these impurities can be cleaned away. If the water is not changed for a long time, the water quality in the fish tank will be very poor, so that the bacteria inside will multiply in large numbers, which may cause fish to get sick. If the water is not changed in time, the fish may die.
3. In addition, there will be some trace elements in the water, so the elements may be lost. If the water is not changed for a long time, these elements will be deficient, thus hindering the growth and development of fish.
