150W Round Button control aquarium heater - https://www.chiye-pet.com/
NICREW Mini Submersible Aquarium Heater, Digital Temperature Display Fish Tank Heater with Wireless Remote Control, Suitable for Freshwater & Saltwater Tank from 1-5 Gallon, 25W : Amazon.ca: 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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YukiHalu 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 0.5-1 Gallon Tank : Amazon.ca: Pet Supplies
hygger Aquarium Heater, 75W 150W 300W 500W 800W 1200W Submersible Fish Tank Water Heater Double Quartz Explosion-Proof with for Freshwater Saltwater Tank (300W for 30~80 Gallon) : Amazon.ca: Pet Supplies
T50 Fully Electronic Aquarium Heater, 50W, up to 15 US Gal / 50 L - Fluval USA
100w Saqure Remote Control Aquarium Heater - https://www.chiye-pet.com/
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Tank Heater, Mobile APP Control Aquarium Heater, Over Temperature Protection Fish Tank Heater, Automatic Constant Temperature Fish Tank Heating Rod, for Various Water Quality : Amazon.ca: Pet Supplies
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AQQA Small Aquarium Heater 15W/25W/50W/75W/100W Submersible Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller for Betta Fish Tank and Turtle Tank 15W (for 1-5 gallon)
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Kaiyopop Carbon Fiber Aquarium Heater 300W / 500W Variable Wattage System LED Digital Temperature Controller, Submersible Fish Tank Water Heater for 30-120 Gallon : Amazon.ca: Pet Supplies
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hygger Small Submersible Aquarium Heater 15W Mini Betta Fish Tank Heater with Thermostat for 1-2.5 Gallon Saltwater Freshwater : Amazon.ca: Pet Supplies
BOEESPAT Small Aquarium Heater 25W/50W/75W/100W Fish Tank Heater for 1/5/10/20 Gallons Betta Fish with LED Temperature Controller and Smart Thermostat(Not Include 25W) (100W) : Amazon.ca: Pet Supplies