Power: 100W Recommended amount of water: 15-45 gallons Adjustable temperature: The temperature of the aquarium heater can be adjusted automatically. Temperature adjustment range: 20°C~34°C, easy to read High Quality: The aquarium heater is made of high quality quartz glass, double sealing material and advanced design to ensure safe operation. Perfect for freshwater or saltwater aquariums, it provides a constant warm environment for tropical fish to stay healthy Convenient and Safe: Our aquarium heater thermostat has two suction cups that can be attached to the aquarium. Polarized plugs prevent electric shock