100W Aquarium Heater: The aquarium heater features a fully submersible waterproof design that precisely and safely maintains the set temperature. Working power: 100W, size: 230mm x 25mm. The aquarium heater is suitable for small aquariums, recommended for 60-120L aquariums. Safe and durable: This aquarium heating rod is made of 2mm thick quartz glass and made of double-sealed components, 33% thicker than ordinary 1.5mm aquarium heating glass, double-sealed, explosion-proof, not easy to break, IP68 wash-resistant. Note: When changing the water in the aquarium, please turn off the power ten minutes in advance and then change the water. ADJUSTABLE TEMPERATURE: The adjustable temperature display ranges from 20C to 34C (68F to 93F) with an easy-to-read temperature scale on the front of the heater. The knob at the top adjusts the desired aquarium temperature on a scale. PRECISION TEMPERATURE ADJUSTMENT: Aquarium heating rods feature high-resistance heating wires and a built-in thermostat that automatically maintains the water at a set temperature within +/- 2F (2C) error, the "ON" light in the middle allows you to clearly see if the product is working properly, ensuring the correct water temperature sufficient and stable water for your beloved fish. Easy to install, with 2 powerful suction cups, can be placed at any angle, please fully immerse the heater in water. This 100W aquarium heater is suitable for 60-120 liters of water, fresh water and salt water. Intelligent constant temperature heating provides a safer and more comfortable environment for your fish.