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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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Amazon.com : YukiHalu Submersible Aquarium Heater, 10W/20W/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Temperature Display, Used for 0.5-1/2/3 Gallons (10 Watts (1 Gallon)) : Pet Supplies
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YukiHalu Submersible Aquarium Heater, 10W/20W/30W Mini Fish Tank Heater with Built-in Thermometer, External Temperature Controller, LED Display, Used for 0.5-1/2/3 Gallons 30 Watts (3 Gallons)
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Oenbopo Small Submersible Aquarium Heater, 10W USB Mini Fish Tank Heater with Built-in Thermometer, External Temperature Controller, LED Display, Used for 5/10/20/40 Gallons - Walmart.com
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Amazon.com: Wusteg Fish Tank Heater 10W with Built-in Thermometer Digital Aquarium Heater USB Powered Submersible Aquarium Heater External Temperature Controller for Turtle Tank,Fish Tank : Pet Supplies
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Amazon.com: AquaMiracle Adjustable 10W Betta Heater Small Aquarium Heater Submersible Fish Tank Heater 5V/2A USB Powered Super Mini Aquarium Heater with Digital Display Thermostat, for up to 1 Gallon Tanks : Pet
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Amazon.com: MiOYOOW Aquarium Heater, 10W Fish Tank Heater with External Temperature Controller Mini Digital Submersible Heater for 3L Fish Tank : Pet Supplies
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Amazon.com: Submersible Aquarium Heater, 10W IP68 Waterproof Mini Aquarium Temperature Controller for 0.5-1.3 Gallon Small Fish Tank Mini Tank : Pet Supplies
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Amazon.com: auomii USB Aquarium Heater,10/20/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Display, Used for 1-3 Gallon Tank : Pet Supplies
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Amazon.com: YOFOTHS Adjustable Mini Aquarium Heater 0.5/1/2/3 Gallon Submersible Small Fish Tank Heater 10W/20W/30W Digital Display External Temperature Controller (USB-10W) : Pet Supplies
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Amazon.com: SHOUD 10W Mini Aquarium Heater,Fish Tank Submersible Heater with LED Digital Display Thermostat,USB Powered Small Heater for Fish One-size : Pet Supplies
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