General description This 300W aquarium heater is designed for use in fish tanks or turtle tanks ranging from 150 to 400 liters. It is suitable for both seawater and freshwater applications, featuring anti-corrosion and rust-resistant properties. Technical specifications Power: 300W Recommended tank size: 150-400L Temperature adjustment range: 68-93℉ / 20-34℃ Glass thickness: 2mm Diameter: 2.8cm Power cable length: 1.75m Complete Accessories Included in the package are a 300W aquarium heater, an external temperature controller, 3 suction cups for fixing the heater, a thermometer strip for checking water temperature, and a bottom protection cover to safeguard the heater and your fish. Other information