Abustle pig Mini Aquarium Heater,25W/50W Small Submersible Fish Tank Betta Heater Thermostat with Free Thermometer Sticker, Under 6 Gallon Fish Tanks (25 W)

【Betta Heater】 This fish tank heater is suitable for 1-5 gallons glass or acrylic aquariums. Please choose the appropriate wattage betta heater according to your aquarium size.
【Automatic constant temperature】When the water temperature reaches 78°F, the green light is on, stops working and will automatically keep the water temperature of the fish tank at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78°F, the heater automatically starts to heat and the red light is on.
【Note 】The Aquarium heater needs to be used for 100% diving, the heater must be fully submerged into water. Please unplug the power plug when changing the fish tank. The heater rod is suitable for people over 16 years old.
【Mini fish tank heater】 For most fish lovers who have small fish tanks of 1 to 5 gallons , a small heater means more space for fish.
【Easy installation】Vertical or horizontal placement into the water using, automatic temperature control 78°F, no need to adjust temperature, simple operation.
【After-sale Service】If you have any questions about this Mini Aquarium Heater, please contact us immediately and we will do our best to solve your problem.