Why is a heater necessary for a freshwater aquarium?

A freshwater fish tank heater is necessary because it helps maintain a stable and suitable temperature range for the fish. Many freshwater fish species are sensitive to temperature fluctuations, and a heater ensures they thrive in their preferred temperature, promoting overall health, metabolism, and natural behaviour.

Are there specific heater types available for different tank sizes and setups?

Yes, there are specific heater types available for different tank sizes and setups. Aquarium heaters come in various wattages and sizes to suit small nano tanks or large aquariums. Some heaters are submersible, while others are external or inline. Choosing the right heater ensures optimal heating efficiency for your tank and all its inhabitants.