The daily aeration time for goldfish should be adjusted according to specific circumstances.
Regular Aeration Time: Under normal conditions, goldfish generally need 2 - 4 hours of aeration per day to meet their oxygen requirements. If the fish tank is equipped with a filter, usually there is sufficient oxygen, and there is no need to keep the aerator running all the time.
High - density Stocking: If the stocking density of goldfish is high, or the volume of the fish tank is small, it is recommended to aerate for 4 - 6 hours a day. Especially in summer or on rainy days, due to high temperatures and low air pressure, the dissolved oxygen in the water will decrease. At this time, the aeration time needs to be increased to 4 - 6 hours, and an additional 1 - 2 hours of aeration in the evening may even be necessary.
Special Circumstances:
High - density Stocking: When the stocking density of comet goldfish is high, the consumption rate of dissolved oxygen in the water accelerates. Aeration equipment (such as air pumps, air stones, etc.) is required to supplement oxygen.
High - temperature Environment: When the water temperature is higher than 28°C, the metabolism of goldfish speeds up, and their demand for oxygen increases. Thus, the aeration time also needs to be increased.
Illness or Treatment: When goldfish are sick, feeding should be suspended, and the oxygen supply should be increased to help them recover.