Mini Fish Tank Heater for Aquarium: 50W/100W/200W/300W/500W Submersible Betta Turtle Heaters with Accurate Temperature LED Digital Display - Overheating and Off-Water Protection for 10-20 Gallon

Super Mini Aquarium Heater: Vatalley fish heater is SUPER SHORT in length, which is only a bit more than HALF of the length comparing with the traditional fish heaters! Takes up less space, easy to hide, but in full power! Temperature range is 59℉ to 93℉(accuracy ±0.5℉)

Safe and Durable: The betta fish tank heater is made of explosion-proof quartz glass material and high-temperature resistant nickel-chromium heating wire, not only can quickly and stably conduct heat to the surroundings, but also safer for your fish

LED external controller: The controller digit display will show the current water temp and the set temp, much more accurate than the traditional knob-controlled betta fish heaters or turtle tank heaters, allowing you to check and adjust the temperature at any time

Overheating Protection & Constant Temperature: The betta heater will auto shut off when out of water or overheating. When the water temp is 1-2℉ lower than the set temp,the red light on and it will start heating at 10% to 30% power to smoothly keep the set temperature to save energy

Wide Range of Use: The heater for fish tank is suitable for 10-20 gallon tanks in both SALTWATER or FRESHWATER. It can be used in fish markets, fish ponds, aquariums, great for nano tanks, turtle/betta fish tanks! We provide a 12-month quality guarantee. If there is any problem with our product, please contact us