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GLOFISH Submersible Fish Heater, 50-watts - Chewy.com
MantaMaze 500W/800W/1000W Titanium Aquarium Heater - Submersible Fish Tank Heater for 50-300 Gallon with Over Heating Protection and Anti-Dry Burning - Suitable Freshwater and Saltwater : Amazon.ca: Pet Supplies
My 50 gallon divided Betta tank. Each section is plumbed and connected to a canister filter with a UV light and an inline heater. : r/bettafish
Uniclife Aquarium Heater Submersible with Thermometer, 200 Watt for 50 Gallon Fish Tank : Amazon.ca: Pet Supplies
Uniclife Aquarium Heater Submersible with Thermometer, 200 Watt for 50 Gallon Fish Tank : Amazon.ca: Pet Supplies
Marina Submersible Aquarium Heater - Pet Valu
Uniclife 200 Watt Aquarium Heater with Thermometer, Fish Tanks Heater of 50 Gallon | Walmart Canada
Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt : Amazon.ca: Pet Supplies
Eheim Thermocontrol E Electronic Aquarium Heater, 50W - DYNO.CA