ideal temperature for freshwater aquarium
Tropical fish are those that require heated water, generally in the range of 75-80Â°F (24-27Â°C). Because many homes are not kept in that temperature range day and night, these fish require a heated aquarium.ater Changes. A simple water change can impact the temperature significantly, depending on the tank size and volume of water changed. Small water changes are always preferable to large changes, and the temperature of the water used should be tested to ensure it closely matches the water temperature of the aquarium.