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Amazon.com: Aquatop 10W Pisces Nano Heater - Fully Submersible for Nano Fish Tanks Up to 3 Gallons, Preset 78F Electric Thermostat, Heat-Resistant Water Heater, Small Aquarium Heaters, PCS-10W : Pet Supplies
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Kulife Fumak Super Mini Aquarium Heater 10W Betta Heater Small Aquarium Heater Adjustable Submersible Fish Tank Heater Turtle Heater with Digital Display Thermostat, for 1-2 Gallon Tanks - Yahoo Shopping
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QIFEI USB Powered Submersible Aquarium Heater, 10W/5V/2A Adapter, Mini Fish Tank Heater 10W with Built-in Thermometer, External Temperature Controller, LED Display, Used for 0.26-0.78 Gallon Tank - Walmart.com
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