Small Aquarium Heater 150W Submersible Fish Tank Heater for 20-40 Gallons, Dual LED Display Temperature Controller, Suitable for Saltwater and Freshwater, Mini Water Heater for Betta/Turtle Tank

【Precise Temperature Control System.】Thanks to the multiple temp sensors, our aquarium heater has additional sensitive temp probe, which is more precise to control the heater temp constant at an accuracy of ±1℉ and providing the suitable living environment for your aquatic creatures.

【Super Mini Size】 This small aquarium heater is SUPER SHORT in length. It is only 5.1in/13cm, a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length is fit for Mini-Aquarium, such as nano tanks / betta tanks and it perfectly solves the headache of the fish keepers on the large size of the traditional heaters! Takes up less space, easy to hide, but in full power!

【External Temperature Controller with Dual Temp Displays】The heater with a digital display temperature control system. You’ll be able to set temperature in the range of 59-93°F by the external controller. LED digital screen displays real-time water temperature and set temperature. Heat indicator lights on red when fish heater starts to heat and turns in blue once it reaches set temperature.

【Made with Premium Quartz】 The aquarium heater is made of 2mm thickened quartz glass. This fish tank heater is resistant to explosion and corrosion and it can be widely used in freshwater and saltwater fish tank, turtle tanks and aquariums.

【Memory Function, Dry Burning-resistant Protection】 The fish tank heater enables memory function, if power is shut off, the heater will keep the temperature settings until it powers on again,no need to worry about pets when you going out. When the heating rod leaves the water, the heater will automatically power off, and the controller will display "E0". When fully submerged in water again, the heater will automatically return to normal, no need to unplug the power or reset the controller.