High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation. Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20°~34°C(65° F - 93° F), and the display is easy to read. Fully Submersible. Power: 200W. Suggested water volume: 75gal. Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy. Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock. Delivery Quantity: 1 Piece