Vatalley Submersible Fish Tank Heater for Aquarium: 200W/300W/500W Aquarium Heaters with Dual Temperature Digital LED Display - Overheating and Off-Water Protection for 20-40 Gallon

Safe and Durable: The 200W fish tank heater is designed for safety and durability, and encased in a high-durability ABS shell. The nickel-chromium heating wire and quartz glass are made of high-temperature resistant materials, giving the product a high level of safety and durability

Overheating & Off-Water Protection: The betta fish tank heater will stop automatically when the set temperature is reached, and it will power off and buzz an alarm when it exceeds 97℉. Moreover, the betta fish heater will automatically power off when it leaves the water surface

Digital LED Controller: The fish heater has Digital LED temperature display range: 59℉-95℉, with an accuracy of ±1°F, which can display the real-time water temp and set temp, so that you can know the temperature change in the fish tank easily. There is also a clear heating indicator on it

Three heating modes & energy saving: 1, Precision mode - start heating when the water temp is 1℉ below the set temp. 2, Energy saving mode - start heating when the water temp is 2℉ below the set temp, truly effective energy saving. 3, Heat to the specified temp and switch to standby mode

Wide Range of Use: The heater for fish tank is suitable for 20-40 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