Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons

Tawatiler Aquarium Heater, 300W Fish Tank Heater with Leaving Water Automatically Stop Heating and Temperature Control System, Suitable for Saltwater and Freshwater

Tawatiler Submersible Aquarium Heater,200W/300W/500W Fish Tank Heater with Over-Temperature Protection and Anti-Dry Burn for Marine Saltwater and Freshwater

Penn-Plax Warm Tone LED Aquarium Heater 15.5 Length 300 Watt

Tawatiler Aquarium Heater,100W Fish Tank Heater with LED Digital Display & 5 Safety Protection,Submersible Aquarium Heater with 2 Suction Cup and 8.2Ft Cord for 10-20 Gallon Fish Tank

Betta Fish Tank, Smart Automatic Heating, Easy Water Change Valve, and Energy-Efficient LED Lighting - Perfect for Office, Home, and Bedrooms

Aquarium Heater,100W Fish Tank Heater,Fully Submersible Portable Electric Heater with Over-Temperature Dry Burning Protection,for 50-160 Gallon Freshwater & Saltwater Tank

Tawatiler Aquarium Heater 25W, Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat for Freshwater and Saltwater Tank 3-5 Gallons

Gyugmhao Aquarium Heater,300W/500W/800W/1000W/1200W Intelligent Fish Tank Heater with Digital LED Controller and Automatic Power-Off When Leaving Water for Saltwater and Freshwater

Interpet Heater Glass Life Thermal 50W for 3-10 Gallon Aquariums

Interpet Heater Glass Life Thermal 100W for 10-20 Gallon Aquariums