[Small Aquarium Heater] MantaMaze 25W Mini fish tank heater is 4.7 inches long, about 1 inch shorter than the iPhone 13. Ideal for use in small glass or acrylic desktop aquariums from 1 to 6 gallons.It can automatically control water temperature to 78°F, no need to adjust the temperature, which makes your fish and turtles happier. [How to use this heater] First fully immerse the 25W aquarium heater horizontally or vertically in water, then plug it in, the red light will be on, the heater will start to work until until the water temperature reaches 78°F and the red light is off, then the green light illuminates, the heater stops working and maintains a constant temperature of 78°F. Accuracy range:±3°F. [Operating Precautions] The MantaMaze Small Aquarium Fish/Turtle Water Heater should be 100% completely submerged in water before plugged in, do not operate or leave the water heater plugged in when your aquarium is out of the water. Please unplug the power plug first before changing the
