Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies
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)
Tetra 2-10 Heater for Aquariums – Petsense
10W/15W Adjustable Betta Heater Small Aquarium Heater Submersible Fish Tank Heater USB Super Mini Aquarium
Amazon.com: FREESEA Aquarium Fish Tank Heater: 100 Watt Submersible Betta Heater - Adjustable Thermostat with Thermometer for 15-25 Gallon Marine | Saltwater | Freshwater : Pet Supplies
Amazon.com: Zoo Med BettaTherm Submersible Betta Bowl Heater 7.5 Watts : Pet Supplies
Amazon.com: DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker : Pet Supplies
Amazon.com : Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks : Pet Supplies
Amazon.com : SILICAR Mini Aquarium Heater, 10W Fish Tank Heater with Built-in Thermometer, LED Display, External Temperature Controller, Submersible Turtle Tank Heater for 0.5-1 Gallon : Pet Supplies
Amazon.com: Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W : Pet Supplies
TopFfin Betta tank aquarium heater, 10 Watts Slim Design, Up to 5 gallons, New | eBay
Tawatiler Aquarium Heater,25W/50W Fish Tank Heater for 1-12 Gallon Fish Tanks,Small Automatic Thermostatic Betta/Turtle Tank Heater with Powerful Big Sucker(Preset Temperature 78℉) - Walmart.com
Amazon.com: SunGrow Halfmoon Betta Heater, 10 Watts, for Small Tanks, Fully Submersible Aquarium Heater, Automatically Reaches Preset Temperature, Energy-Efficient Heating Module, Suction Cups Included : Pet Supplies
100W ETL Certification Aquarium Heater - hygger
50/25W Aquarium Heater Betta Fish Tank Heater For Small Fish Tanks 1-5 Gallon | eBay
TOPFIN 10 watt Slim Betta Tank Heater for Aquariums Up to 5 Gallons, Submersible | eBay
Amazon.com: Mylivell Aquarium Heater 25W 50W 100W 200W 300W Submersible Auto Thermostat Fish Tank Heater, Small Aquarium Heater for 10-100 Gallon Fish Tank, Freshwater & Saltwater Compatible : Pet Supplies
HC200-Water Rebirth Preset Submersible Aquarium Heater - Fish Tank Heater - Water Heater for Fish Tank - Marine Water Heater - Aquarium Heater - Water-Rebirth
3 Best small aquarium heaters for tiny tanks 1 - 10 gallons
SunGrow Betta Fish & Turtle Aquarium Tank Water Heater, 10-watt | eBay
Amazon.com: Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L) : Pet Supplies
Top Fin Betta Tank Heater For Aquariums Up To 2.5 Gallons 20 | eBay
50 Watt Submersible Small Fish Tank Heater - hygger
