Fish Tank Heater for Aquarium - 50W Samll Aquarium Heater | Submersible Tank Heaters with Mini Aquariums Thermometer for Saltwater Freshwater 5-10 Gallon Tanks

About this item

• 【Preset 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. [Important: This model is fixed at 78°F and does not support manual temperature adjustment.]
• 【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.

Overview

• Product Dimensions ‏: ‎ 0.95 x 0.78 x 4.72 inches; 4.97 ounces
• Item model number ‏: ‎ JRB-50
• Date First Available ‏: ‎ January 1, 2026
• Manufacturer ‏: ‎ AURLFIOE
• ASIN ‏: ‎ B0FY5PCPWF
• Best Sellers Rank: #133,617 in Pet Supplies (See Top 100 in Pet Supplies) #239 in Aquarium Heaters
• Customer Reviews: 3.6 3.6 out of 5 stars (60)