How warm does an aquarium need to be?

The ideal temperature for an aquarium depends on the type of fish and plants being kept. Generally, tropical fish thrive in temperatures ranging from 75°F to 80°F (24°C to 27°C), while cold-water fish can be kept in temperatures around 60°F to 70°F (15°C to 21°C). It’s essential to maintain stable temperatures and avoid rapid fluctuations, as this can stress aquatic life. Always research the specific needs of your aquarium's inhabitants for the best results.