Tetra HT Submersible Heater 100 Watts, For 10 to 30 Gallon Aquariums, UL Listed - Walmart.com
YukiHalu Small Submersible Aquarium Heater, Mini Fish Tank Heater 25W 50W 100W 200W with Built-in Thermometer, External Temperature Controller, LED Display, Used for 5/10/20/40 Gallons 25 Watts
Top Fin® Submersible Aquarium Heater | fish Heaters | PetSmart
Aquarium Heater Size Guide
Uniclife Aquarium Heater Submersible with Thermometer, 100 Watt for 10-25 Gallon Fish Tank : Amazon.ca: Pet Supplies
Best Fish Tanks: Heater, Light, and Accessories | Reviews by Wirecutter
Neo-Therm Pro Heater
Aqueon's Preset Aquarium Heater Line - YouTube
E100 Electronic Heater, 100W, up to 30 US Gal / 120 L - Fluval USA
Amazon.com: AQQA Aquarium Heater 100W Submersible Fish Tank Heater 10-30 Gallon Aquarium Betta Heater Small Aquarium with Suction Cups Thermostat Heater for Freshwater & Saltwater(100W) : Pet Supplies
Tetra Submersible Aquarium Heater / HT30 100W Heater / 10 to 30 Gal Aquarium – CanadaWide Liquidations
M100 Submersible Heater, 100W, up to 30 US Gal / 100 L - Fluval USA