Dreyoo 2 Set Aquarium Fish Tank Heater, Submersible Aquarium Heater with Thermometers Stickers and Suckers, Adjustable Knob Aquarium Water Heater Built in Thermostat for Aquariums (300 W)

Features

• 300W Aquarium Heater: suit for 40 to 55 gallon aquariums, the tank heater is 11" in length, 110-120V and 5 feet plug cable, the package comes with 2 pack fish tank heaters, 4 aquarium thermometer stickers and several suckers
• Adjustable Temperature: aquarium submersible heater has an exact temperature scale of 68 to 93 °F, complete control of the water climate within 1 degree of difference; Sensitive and reliable thermostat maintains uniform temperature, when red light on is heating, and automatic shutdown when temperature is reached
• With 4 aquarium temperature stickers: the thermometer strips range from 39℉ to 97℉ and 4℃ to 36℃; The temperature sticker is a piece of temperature sensitive paper with color markings showing the current temperature, very easy to read
• Distinct Design: the aquarium water heater uses 2 mm thickened quartz glass, can be applied in fresh-water and saltwater aquariums, easy to hide in the tank, which is not easy to crack and safe for people and water animals
• Note: the fish aquarium heater need to adjust temperature firstly, and then fix suction cup, and the heater must be completely immersed in the water, finally powered on; Also, if you want to clean tank water heater, and you should wait the heater to cool before removing it