MantaMaze Aquarium Heater, 25W/50W Fish Tank Heater Small Automatic Thermostatic Betta/Turtle Tank Heater with Powerful Big Sucker for 1-12 Gallon Fish Tanks (Preset Temperature 78) 25W for 1-6 gallon
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50W Aquarium Heater Small Fish Tank Submersible Heater 75℉ Constant Temperature Turtle Heat Rod for Betta Frogs Newts Turtles : Amazon.ca: Pet Supplies