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Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies
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Is Your Betta Warm Enough? The Best Aquarium Heater for Bettas! My Experience, and my FAVORITE - YouTube
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SunGrow Betta Heater, 10 Watts, Fully Submersible Aquarium Heater, Automatically Reaches Preset Temperature, Ideal for Small Tanks, Suction Cups Included for Quick Installation : Amazon.ca: Pet Supplies
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Amazon.com: PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks (Preset Temperature 78℉) : Pet Supplies
![Is Your Betta Warm Enough? The Best Aquarium Heater for Bettas! My Experience, and my FAVORITE - YouTube Is Your Betta Warm Enough? The Best Aquarium Heater for Bettas! My Experience, and my FAVORITE - YouTube](https://i.ytimg.com/vi/ZV-0AjWQlUA/maxresdefault.jpg)