Before using the product, please ensure that the power supply voltage matches the rated voltage. For all glass heaters, carefully examine them for any damaged parts before installation. Do not use the heater if the cord is damaged or cracked, and contact the manufacturer if this is the case.

The IPX8 design of the heater is non-detachable, and it should not be disassembled, as this will damage the heater. The heater must be fully submerged in water before being plugged in. After unplugging the heater, wait at least 10 minutes before changing the water or removing it from the water. It is strictly forbidden to remove the heater immediately after unplugging it.

To ensure even and thorough heat distribution in the tank, it is recommended to place the heater in an area with good water circulation. The aquarium temperature may fluctuate depending on the ambient room temperature, and it is normal for the temperature to vary within ± 3°F. If the room temperature is below 60°F, a more powerful heater than the recommended one may be necessary.

To avoid injury, do not touch the heating part directly. The 300W aquarium heater is recommended for fish tanks between 40 and 75 gallons. The heater's length is 11.5", and the power cord is 6ft long, with a voltage of 110V/60Hz.

The heater features an easy-to-access dial on the top, allowing you to adjust the water temperature from 65°F to 89°F with ease. The red light automatically shuts off when the target temperature is reached, and the heater maintains a constant temperature in your marine or freshwater aquarium.

The package includes a 300W Small Aquarium Heater, 2 suction cups, and a thermometer strip. Always keep the heater fully submerged in water before plugging it in, and unplug it and wait for at least 10 minutes before performing any aquarium maintenance or removing it from the water.

product information: