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Amazon.com: MQ Submersible Aquarium Heater Auto Thermostat, 300W Fish Tank Heater with LCD Digital Aquarium Thermometer, Shatter-Proof and Blast-Proof : Pet Supplies
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Amazon.com: FREESEA Aquarium Fish Tank Heater: 100 Watt Submersible Betta Heater - Adjustable Thermostat with Thermometer for 15-25 Gallon Marine | Saltwater | Freshwater : Pet Supplies
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