- Adjustable Temperature: The Micro USB Cylinder Heater offers precise temperature control ranging from 18 to 34 degrees Celsius, with an accuracy of 0.1 degrees. This ensures your fish thrive in their ideal environment. - Efficient Heating Technology: Featuring a specialized electric heating wire designed for nickel welding, this heater is filled with black sand to optimize heat energy conversion. This allows for rapid energy storage and reduces electricity consumption. - Compact Design: Measuring just one inch, this heater is space-efficient and perfect for mini aquariums with a water capacity of up to 4 liters. - Versatile Application: Designed specifically for small aquariums, it is resistant to acids and alkalis, making it suitable for both freshwater and saltwater setups. Use Scenarios: 1. Ideal for small desktop fish tanks to maintain a stable and comfortable temperature for your aquatic pets. 2. Perfect for breeding tanks where precise temperature control is crucial for successful fish reproduction. 3. Suitable for temporary holding tanks for fish during transport or maintenance, ensuring a consistent and safe environment. Enhance your aquarium experience with a reliable heating solution that meets the specific needs of your aquatic life.