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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
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Amazon.com : SunGrow Digital Betta Thermometer, Yellow Color, Accurately Reads Aquarium Temperature, with 2 Suction Cups, 1-Pack : Pet Supplies
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