Fish Tank Heater for Aquarium - 50W Aquarium Heater, Small Submersible Tank Heaters with Mini Aquariums Thermometer for Betta Turtle Saltwater Freshwater 5-10 Gallon Tanks(Preset 78℉)

【Preset 78°F Aquarium Heater】 Keep your tank at the perfect warmth with our 50W submersible heater. Designed for 5-10 gallon tanks, it automatically maintains a consistent 78°F (25.5°C), ideal for Bettas and tropical fish. The plug-and-play design eliminates the hassle of complicated settings, providing peace of mind for both beginners and pros. 【Perfect for 5-10 Gallon Small Tanks】 Compact and powerful, this small fish tank heater is specifically engineered for 1-10 gallon glass or acrylic tanks. Its mini size allows it to be easily hidden in nano tanks, turtle tanks, or shrimp habitats, ensuring efficient heat distribution. 【Fully Submersible & Safe Material】 Built with durable, heat-resistant glass and a waterproof seal, this submersible water heater must be fully submerged underwater to work. It is safe for both freshwater and saltwater aquariums, providing a reliable heating environment for your aquatic pets. 【Bonus Mini Thermometer Included】 Each package comes with a free high-accuracy aquarium thermometer, allowing you to monitor the water temperature in real-time. This helps you double-check that your heater for fish tank is performing perfectly for your peace of mind. 【Easy to Use & Important Note】 Simply plug and play with no complex setup. Note: This is a preset heater and does NOT have an auto shut-off when out of water. Please unplug it 10 minutes before water changes to protect the heating rod and your safety. › See more product details