Non-flowing water can raise fish. The maintenance of water quality is generally related to two factors, one is the amount of water and the other is the number of fish. If there is enough water, the water quality can be maintained, even if it does not flow, but if there are many fish, the water quality will easily deteriorate. At this time, other ways are needed to improve the water quality and keep the water environment clean and hygienic.

1. Change water regularly: Changing water is essential for fish farming, and changing water is a good way to keep the water quality. Usually, it should be changed every five to seven days. If the fish tank is relatively small, you can consider changing it every three or four days. Every time you change water, you need to change about one quarter, and at most you should not exceed one third of the total water volume.

2. Install a filter: If conditions permit, you can install a filter in the fish tank, which can also maintain the water quality. The filter is divided into two parts, one is a water pump and the other is a filter box. Pumps can make water flow, thus slowing down the deterioration of water quality. At the same time, flowing water can filter out impurities and dirt after passing through filter boxes, thus improving water quality.

3, daily oxygenation: Usually oxygenation can also play a role in maintaining water quality. Oxygenation not only helps fish breathe, but also promotes the reproduction of nitrifying bacteria, thus transforming ammonia nitrogen in water faster. In addition, more oxygen can inhibit the growth of anaerobic bacteria.