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Helio 700 Watt PTC Smart Heater 2x350W (100-170 gallons) w/Controller - Innovative Marine - SaltwaterAquarium.com
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Helio PTC 1000 Watt Aquarium Heater w/ Controller (2 x 500W) - Innovative Marine — ATAquariums
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Amazon.com: FEDOUR 100W/200W/300W PTC Aquarium Heater, Adjustable Fish Tank Heater with External Temperature Controller, Turtle Tank Heater with Detachable Protective Cover for up to 80 Gallon Tank (300W) : Pet Supplies
Smart Aquarium Submersible Heater Fish Tank LCD Display PTC Thermostat Heater | eBay
Slimline Schego titanium heaters use PTC for better thermal management | Reef Builders | The Reef and Saltwater Aquarium Blog
Amazon.com: HITOP PTC Adjustable Aquarium Heater, Sturdy Fish Tank Heater with Protective Cover, 100W/200W/300W/400W Heater for Fresh/Saltwater Fish/Turtle Tank up to 120 Gallon : Pet Supplies
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Aquarium Heater Submersible Fish Tank Lcd Display Smart Ptc Thermostat Adjustable Constant Temperature Water Heating Rod | Fruugo NO
500W/1200W Fish Tank Heater Aquarium Heater with Digital Display Mini PTC Fish Tank Heating Rod AU Plug 220V Aquarium _ - AliExpress Mobile
Innovative Marine Helio PTC Smart Heater - Benson's Fish Room
