Goldfish need to be exposed to sunlight, but attention should be paid to the duration and method.
Benefits of Goldfish Being Exposed to Sunlight
Sterilization and Disinfection: The ultraviolet rays in sunlight can help sterilize goldfish, prevent water mold disease, and reduce the number of bacteria in the water.
Promote Calcium Absorption: Appropriate sunlight is helpful for goldfish to absorb calcium and maintain good physical health.
Keep the Body Color Bright: Sunlight can make the body color of goldfish more vivid and bright.
Duration and Method of Goldfish Being Exposed to Sunlight
Time Control: It is advisable for goldfish to be exposed to sunlight for 3 to 4 hours a day. It is best to move the fish tank to a ventilated area on the balcony when the sunlight is not too strong at 9 a.m., and end the sun exposure when the sunlight is strong at noon. Then, move the fish tank back to a shady place.
Avoid Intense Sunlight Exposure: Intense sunlight will raise the water temperature, which may lead to oxygen deficiency in goldfish or even scald them. Therefore, in summer, devices such as sunshade curtains or bamboo mats should be used to block part of the sunlight to prevent the water temperature from being too high.
Water Quality Management: Sunlight will cause the rapid growth of algae in the water, affecting the water quality. It is necessary to change the water frequently and clean the fish tank to keep the water clean.
Negative Impacts of Goldfish Being Exposed to Sunlight and Preventive Measures
Cloudy Water Quality: Long-term exposure to sunlight will make the water quality cloudy, affecting the health of goldfish. It is necessary to change the water regularly to keep the water fresh.
Too High Water Temperature: Too high a water temperature will make goldfish move slowly and may even trigger fish diseases such as scorched tails. In summer, the water temperature should be controlled below 32-33°C, and direct sunlight should be avoided.