Methods to Cool Down Goldfish in Summer include the following:
Sun - shading for Cooling: Move the fish tank to a cool and well - ventilated area to avoid direct sunlight. You can build a sunshade above the fish tank or use curtains to block the sunlight, especially during the intense noon hours.
Using Ice Cubes: Putting some ice cubes in the fish tank can effectively lower the water temperature. However, be careful not to put too many ice cubes, as a too - rapid drop in water temperature may harm the goldfish.
Cooling with an Air - conditioner: Place the fish tank in an air - conditioned room or use an air - conditioner to cool the entire room. But be cautious to avoid a large temperature difference, which could affect the goldfish's health.
Cooling with a Fan: Place a small fan beside the fish tank to increase air circulation on the water surface, helping to cool it down. At the same time, remember to regularly add water to the fish tank to prevent water evaporation.
Cooling with a Chiller: If conditions permit, you can use a chiller specifically designed for aquariums. This kind of equipment has a good cooling effect and precise temperature control, but it's relatively expensive.
Maintaining Clean Water Quality: Change the water regularly to keep the water clean. In summer, it's recommended to change the water once a day or every other day to avoid water quality deterioration.
Appropriately Raising the Water Level: Appropriately increasing the water level in the fish tank can reduce water temperature fluctuations.
Increasing Oxygen Supply: During the hot summer, the dissolved oxygen in water decreases, so it's necessary to increase the oxygen supply. You can use an aeration device or increase the power of the air pump.