FEDOUR Adjustable Aquarium Heater 50W 100W 300W, for 5-70gallon Fish and Turtle Tank What will you get All accessories 1pc fish tank heater 3pcs strong suction cup, effectively protect the heater from slipping. 1pc stick-on thermometer Stick-on Thermometer Just stick the thermometer on the outside of the tank, below the water surface, and then you can easily read the water temperature. Stable and Safe Structure Details of the Aquarium Heater Automatic Constant Temperature: After heating to the set temperature, the heater will automatically stop heating. When the temperature is detected to be lower than the set temperature, the heater will automatically start heating and maintain a constant water temperature. Explosion-proof Design Tight seal on top The top of the fish heater is well sealed and does not leak water. Thickened Glass Thickened quartz glass, explosion-proof. Crash-proof Quartz Cotton Shock-proof cotton pad Bottom Protective Cover Collision prevention Installation Precautions The fish tank heater can be installed horizontally and vertically. The aquarium heater must be fully submerged in water. The power cord should be placed in a U-shape to prevent water from flowing back into the socket. When the tank needs a water change, disconnect the heater from the power supply and leave it to cool for 15 minutes or more before removing it. Applications