1. How to change the water in the ornamental fish tank

The water in the ornamental fish tank is usually changed once a week. Before changing, you need to connect the tap water first and put it in the sun to dry it. It can only be used when the chlorine gas is volatilized.The old water is pumped out from the bottom of the tank with a pipe, and then the new water is slowly poured in, so that the water quality will not fluctuate too much and affect the health of the fish.The temperature before and after changing water should also be consistent, so as not to stimulate it.

2. what will happen if the water in the fish tank is not changed

1. Water quality deterioration: If the water in the fish tank is not changed for a long time, the residual bait and feces in the water will not be cleaned up, and the water quality will continue to deteriorate.Microorganisms decompose it and produce a large amount of ammonia nitrogen, which is harmful to fish, if not converted in time, it will cause stress response, and even lead to its death.

2. Reduction of dissolved oxygen: The fish itself will breathe in the water. If the water is not changed, the oxygen will be reduced, and the oxygen will be consumed in the process of microbial decomposition. If there is no other oxygenation method, the fish will lack oxygen and float, and even die.

3, fish is not good: Even if the water is still clear, while the consumption of oxygen is enough to cope with, but the fish will also be bad.Because of the aging of water quality, the growth of fish will be limited to a certain extent, which will become an old fish, unable to raise it.