SZELAM 100W/300W/500W/800W Aquarium Heater Submersible Fish Tank Heaters with Intelligent Temperature Probe and LED Display External Temperature Controller,for Fish Tank 5-158 Gallons 300W (for 26-79 gallon tank)
Aqueon Submersible Aquarium Heater 50W — Natty Pet Shop
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Aqueon | Submersible Aquarium Heater – Super Cichlids
Tetra Submersible Aquarium Tank Heater, 2-15 Gallon, 50-Watts - Walmart.com
Accu-Therm Heater
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Aquarium Heater Fish Tank Submersible Heater Turtle Heat Rod with Temperature Display External Temperature Controller - Walmart.com
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Fish Tank Heater Aquarium Water Heater Submersible Heater Automatic Constant Temperature Fish Bowl Heater For Turtle Aquarium - AliExpress