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Amazon.com : auomii Small Submersible Aquarium Heater,Adjustable Mini Fish Tank Heater 25/50/100/150/200/300 Watts with External Temperature Controller, LED Display, Smart Memory, Used for 1-60 Gallons : Pet Supplies
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Amazon.com: ERAARK 500W Fish Tank Heater for 60–150 Gallon Submersible Aquarium Heater,External Temperature Controller LED Temperature Display Suitable for Marine Saltwater and Freshwater : Pet Supplies
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Tetra HT Submersible Aquarium Heater: HT10 Heater - 50 Watt - in Bath, PA - Phillips Pet Supply Outlet
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