It is not good to raise koi fish with too large a flow rate of the water pump. Although koi is relatively large, it is not a fish living in rivers, but prefers to live in an environment with slow water flow, so too much flow is not helpful to it. The flow rate of the water pump is generally related to the size of the fish tank, so long as it is guaranteed that all the water can be circulated 7-10 times per hour, so that the water quality can be maintained and the health of fish is also very helpful.

1. Dead water becomes active: The primary function of water pumps is to change stagnant water into living water. Stagnant water is not flowing, so it is easy to deteriorate, and some insects will lay eggs in it, while living water is flowing. As the saying goes, running water does not rot, so compared with stagnant water, it is not so easy to deteriorate, and it also has a kind of protection for the health of fish.

2, improve dissolved oxygen: Because the water pump makes the water flow, the flowing water comes into contact with the air more frequently, so oxygen can be brought into the water to improve the dissolved oxygen, which is very helpful for fish to breathe. It should be noted that this way of improving dissolved oxygen is very limited, which is far from enough for big fish, and a special oxygen pump is needed.

3. Increase activity: When water flows, fish must also swim, which can increase their activity and help their growth and health. However, not all fish like flowing water, especially when the water flows too fast, it will also have side effects on fish, so it is necessary to control the flow.