The water quality requirements for goldfish mainly include the following aspects:
pH Value:
The suitable pH value range for goldfish is 6.5 to 8.0, and the most ideal pH value range is 7.5 to 8.5. A water quality that is slightly alkaline on the neutral side is most beneficial to the health of goldfish.
Water Temperature:
The suitable water temperature range for goldfish is 18 to 24 degrees Celsius, but the water temperature that is most suitable for their growth is 20 to 28 degrees Celsius. A sudden change in water temperature can have an adverse effect on goldfish. Therefore, when changing the water, pay attention that the difference in water temperature should not exceed 2 to 3 degrees Celsius.
Hardness:
The water quality hardness that goldfish prefer should be between 150 and 300 mg/L. A sudden change in hardness may affect the health of goldfish.
Dissolved Oxygen:
The content of dissolved oxygen in the water is crucial for goldfish. Generally, it is required to be above 5 mg/L. If the dissolved oxygen is too low, goldfish may exhibit the phenomenon of "floating to the surface", and in severe cases, they may even die.
Transparency:
The water quality must be clear and transparent, without any turbid substances, so as to ensure the health of goldfish.
Odor:
There should be no strange smell in the water, which is one of the basic conditions for the healthy growth of goldfish.
The methods for regulating and maintaining the water quality include:
pH Value Regulation:
If the pH value is too low, an appropriate amount of carbonate or coral sand can be added to increase the alkalinity; if the pH value is too high, monobasic potassium phosphate or driftwood can be used to lower the pH value.
Water Change:
Regularly changing the water is an important measure to keep the water quality clean. Each time, the amount of water changed should be 1/3 to 1/4 of the total water volume. Before changing the water, make sure that the tap water has been exposed to the sun or left standing for enough time to remove the chloride ions.
By meeting these water quality requirements, a healthy and comfortable living environment can be provided for goldfish, ensuring their healthy growth and bright body colors.