Maintaining your aquarium has never been easier with the Interpet Nanostat Heater, engineered to provide an ideal temperature for sustaining the vibrant health of tropical fish and flourishing plants. The heater's built-in thermostat is the core of its intelligence, sensing water temperature fluctuations and autonomously activating or deactivating to preserve a stable aquatic environment. This regulation is crucial for the wellbeing of your tropical ecosystem throughout the seasons, offering a perfect habitat for your aquatic life. The Interpet Nanostat heater comes in both 10W and 25W size. Key Features: Automatic Temperature Regulation: With its advanced built-in thermostat, this heater accurately senses and maintains your aquarium's water temperature, ensuring a stable and healthy environment for your aquatic inhabitants. This automatic regulation is essential for the well-being of tropical fish and plants, especially during seasonal changes. This neat little heater takes the guesswork out of keeping your tropical aquarium at the correct temperature. The in-built thermostat keeps your aquarium at a balmy 25C by sensing the water temperature and automatically turning itself on or off to maintain a stable temperature. Its ideal for maintaining a stable water temperature all year round, making it perfect for tropical fish and most tropical plants.