- Precise Temperature Control: The USB micro-type cylinder heating rod allows you to set the temperature between 18-34°C with an accuracy of 0.1 degrees, ensuring your fish thrive in their ideal environment. - Space-Saving Design: Specifically designed for small fish tanks, this heating rod occupies minimal space, making it perfect for compact setups. It is suitable for both freshwater and seawater tanks, providing versatility for various aquatic environments. - Efficient Heating Technology: Featuring a new type of nickel soldering electric heating wire filled with sand, this device effectively surrounds and heats up water. It converts heat energy efficiently, resulting in quick warmth while saving electricity. - Compact Size: Measuring as small as a thumb, it is ideal for mini fish tanks and micro-tanks with a water capacity of up to 4 liters. This compact design ensures it fits seamlessly into your aquatic setup. - Practical Applications: 1. Ideal for small home aquariums or fish bowls, maintaining a stable environment for delicate species. 2. Great for temporary setups, such as quarantine tanks or breeding tanks, where precise temperature control is essential. 3. Suitable for classroom projects or small offices, providing a reliable heating solution without taking up valuable space. This heating rod combines functionality, efficiency, and a compact design, making it a must-have for any small aquarium enthusiast.