About This

• Made for 10–20 Gallon Fish Tanks Designed for 10–20 gallon aquariums, this 100W aquarium heater is a reliable choice for smaller freshwater setups that need stable daily heating. A practical option for betta tanks, tropical fish tanks, and general home aquarium use.
• External Digital Controller for Easy Temperature Adjustment Adjust and monitor temperature without placing your hands in the water. The external digital controller makes daily operation easier and gives you a clearer, more convenient way to manage tank temperature.
• Compact 6.9 Inch Heater for Smaller Tank Setups The compact 6.9 inch body fits more easily in smaller aquariums and tighter spaces. Designed for flexible placement, this submersible fish tank heater can be positioned based on your tank layout and available room.
• Overheat and Dry-Run Protection for Safer Daily Use Built with overheat protection and dry-run protection to help improve safety during everyday operation. The heater is designed to shut off automatically when water conditions are not suitable, helping protect both the heater and your tank setup.
• Stable Heating for Freshwater and Tropical Fish This aquarium heater is designed to provide consistent warmth for freshwater aquariums, helping support a more comfortable environment for bettas and tropical fish. A dependable heating solution for everyday tank care.