Between 1 and 1.5 meters
Koi carp do have requirements for the water depth. The optimal water depth range is usually between 1 and 1.5 meters. This depth can not only ensure an adequate oxygen content in the water but also maintain a constant water temperature, which is beneficial to the growth and health of koi carp.
The Specific Functions of the Water Depth
Temperature Regulation: A depth of 1 to 1.5 meters can prevent the water from being completely heated through by the sun in summer. At the same time, it won't freeze entirely in winter, helping koi carp to safely get through both summer and winter.
Oxygen Supply: This depth can ensure an adequate oxygen content in the water, avoiding the death of koi carp due to oxygen deficiency.
Preventing Fish from Jumping out of the Pond: Moderate water depth can also effectively prevent koi carp from jumping out of the fish pond, reducing the occurrence of accidents.
Suggestions on Water Depth in Different Scenarios
Summer: In hot weather, the water depth is preferably kept at half a meter or deeper to help koi carp adapt to the high-temperature environment.
Winter: The water depth should be kept at about 1.5 meters to prevent the pond water from freezing entirely.
Other Precautions
Water Quality Management: Koi carp like slightly alkaline soft water. When changing the water, pay attention that the temperature difference of the water should not be too large, and it should be controlled within 2 degrees.
Lighting Conditions: Sufficient lighting is helpful for the metabolism of koi carp and makes their colors more vivid. You can place the fish tank in a place with direct sunlight or use artificial light sources.
In conclusion, a water depth of 1 to 1.5 meters is an ideal choice for raising koi carp. It can not only meet their physiological needs but also simplify the later management.