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Amazon.com: FREESEA 25 Watt Aquarium Betta Fish Tank Heater with Aquarium Submersible Thermometer : Pet Supplies
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Amazon.com: Aquatop 100W Titanium Heater with Controller - Fully Submersible for Fish Tanks Up to 35 Gallons, 68-92 Adjustable Temperature, Durable Water Heater, Aquarium Heater for Turtles & Large Fish, TH-C100 :
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Amazon.com : Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater : Pet Supplies
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