The ZHGSERVU 100W/300W/500W Aquarium Heater is a compact and durable heater that is perfect for keeping your aquarium or other water system warm. With a detachable Type-C cable, it is easy to set up and store. The heater is made of high-quality quartz glass and is shatter resistant and waterproof. It provides accurate thermal control via the easy-to-use temperature controller on the top. The compact design makes it ideal for use in fish tanks, turtle tanks, and other small water systems.