AquaMiracle Adjustable 10W Small Aquarium Heater Submersible Fish Tank Heater Betta Heater Turtle Heater Super Mini Aquarium Heater with Digital Display Thermostat, for 1-2 Gallon Tanks : Amazon.ca: Pet Supplies
50 Watt Submersible Small Fish Tank Heater - hygger
Amazon.com: PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks (Preset Temperature 78℉) : Pet Supplies
MantaMaze Aquarium Heater, 25W/50W Fish Tank Heater Small Automatic Thermostatic Betta/Turtle Tank Heater with Powerful Big Sucker for 1-12 Gallon Fish Tanks (Preset Temperature 78) 25W for 1-6 gallon
AQQA Fish Tank Heater 200W Submersible Aquarium Heater 30-40 Gallon Aquarium Betta Heater with Suction Cups Thermostat Heaters for Marine Aquarium & Freshwater (200W) : Amazon.ca: Pet Supplies
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hygger 500W Aquarium Heater with External Digital Temperature Controller Reef Saltwater Fish Tank Heater for 60-120 Gallon Tank : Amazon.ca: Pet Supplies