The Superfish 200W Professional Aquarium Heater is designed to keep your aquatic pets comfortable and healthy in their habitat. Featuring thermal shock-resistant borosilicate safety glass, this aquarium heater is both durable and safe. The glass material ensures that the heater can withstand sudden temperature changes, preventing any potential cracks or damage to your aquarium. This powerful heater is suitable for aquariums ranging from 60 to 125 liters, making it perfect for a variety of aquarium sizes. With a length of 35cm, it can be easily installed and submerged into your aquarium water. The 200W heating element is adjustable and provides precise temperature settings. It also features an extra long mains cable for easy installation.