Aquarium Heaters, 25W Submersible Heater Immersion Heater for Aquarium

It can maintain a constant water temperature and heat output in the tank. The temperature display can be set between 20 and 34°C (68 to 93°F). Double insulated, fully submersible and waterproof, durable and safe design. Power indicator ensures safe operation; it can automatically adjust the temperature, good for fish in the aquarium.