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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
Aqueon Submersible Heater - 150 W
Pawfly Preset Aquarium Heater Submersible 100W with Electronic Thermostat Fish Tank Heater, 20 Gallon : Amazon.ca: Pet Supplies
FishCheers Preset 78℉ Aquarium Heater 250W,Submersible Thermostat Aquarium Heater for 75-85Gallon Fish Tank Suitable for Saltwater and Freshwater Aquariums : Amazon.ca: Pet Supplies
Aqueon Preset Heaters for Aquariums
Pawfly Preset Aquarium Heater Submersible 50W with Electronic Thermostat Fish Tank Heater, 10 Gallon | Walmart Canada
Aquarium heater with fixed temperature | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.
Aqueon Preset Heater - 50 watt
Aqueon Aquarium Fish Tank Preset Heater for Up to 40 Gallons, 100 Watts : Amazon.ca: Pet Supplies