Solid and Dependable Quartz Glass Heat Resistant: The heat-resistant feature of the glass used in aquarium heaters allows it to withstand high temperatures without warping, cracking, or losing its structural integrity. Shatterproof: This feature ensures the safety of the aquarium and its inhabitants by reducing the risk of glass shards entering the water. Waterproof: It ensures the heater functions safely and efficiently underwater, without the risk of electrical damage or short-circuits. Fix Temperature Deviation with Knob Set the Desired Temperature: Turn the temperature knob to the right (clockwise) to increase the temperature. As you do this, the temperature settings on the knob should gradually increase. Continue turning until you reach your desired temperature. Allow Time for Adjustment: It may take some time for the heater to adjust the water temperature (assume deviation of 2F) to the newly set value. Monitor the aquarium's thermometer to ensure it reaches the desired temperature. Be patient, as this process can take a few hours. Advanced capabilities Dual Temperature Reading (°C and °F): This feature enables users to monitor the water temperature in both Celsius and Fahrenheit, allowing for convenient temperature display in their preferred unit of measurement. Heating Indicator: The heating indicator in an aquarium heater is a visual or digital signal that shows whether the heater is actively heating the water. When the heater is actively heating, this indicator is typically illuminated to assure you that the heater is working to maintain the desired water temperature in your aquarium. Heating Component: The heating component in an aquarium heater is the core element responsible for elevating and regulating the water temperature within the aquarium. Proper Way to Submerge Aquarium Heater Unplug the Heater: Before submerging the heater, ensure it is disconnected from the power source to prevent electrical hazards. Safety should be a top priority.Positioning: Place the heater vertically or at a slight angle within the aquarium. Position it near a water circulation source, like a filter outlet, for even heat distribution.Submerge the Heater: Gently lower the heater into the water, ensuring the entire heating element is covered. Secure in Place: Ensure the heater is sturdily attached or anchored to prevent it from moving or falling over, potentially causing damage to the aquarium or injury to the aquatic life. Peace of Mind Set the Desired Temperature: Use the temperature knob to set the desired water temperature. Monitor it closely to maintain the ideal conditions for your aquarium inhabitants.Monitor Regularly: Keep an eye on the heater and the aquarium temperature to ensure it remains within the desired range. Adjust the temperature setting as needed.Regular Maintenance: Periodically inspect and clean the heater to prevent the accumulation of debris or algae, which can affect its performance.