HT-6025 submersible aquarium heater is perfect for 5 gallons small betta fish tank, suitable for both fresh and saltwater.
Visible temperature display allows you to accurately maintain the temperature. A red rotary knob on top to adjust temperatures that range from 20? to 34?.
Water-tight sealing IP68 design. 3 strong suckers tightly fix the heater to the tank vertically or horizontally, the red indicator light on while working.
Shatterproof 2 mm extra thick quartz glass prevents electricity leakage, scald-preventing for your pets and your safety. Measures 20cm x 2.5cm (L x D)
An extra stick-on thermometer to detect 18? - 34? water temp at any time. Using color indication, temperature that the thermometer reads will change from white to blue color.