![Amazon.com: CORISRX Aquarium Heater Set for 75-250 Gallon Fish Tank, 500W Adjustable Water|Turtle Tank Thermometer w/Double LED Temp Display, 500W Water Heater Submersible w/Quartz Tube Plastic Guard : Pet Supplies Amazon.com: CORISRX Aquarium Heater Set for 75-250 Gallon Fish Tank, 500W Adjustable Water|Turtle Tank Thermometer w/Double LED Temp Display, 500W Water Heater Submersible w/Quartz Tube Plastic Guard : Pet Supplies](https://m.media-amazon.com/images/I/916xz+4LKnL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: CORISRX Aquarium Heater Set for 75-250 Gallon Fish Tank, 500W Adjustable Water|Turtle Tank Thermometer w/Double LED Temp Display, 500W Water Heater Submersible w/Quartz Tube Plastic Guard : Pet Supplies
![Amazon.com: Advatec Glass Aquarium Heaters - for Fresh & Saltwater Aquariums (250 Watts / 70-90 Gallons) : Pet Supplies Amazon.com: Advatec Glass Aquarium Heaters - for Fresh & Saltwater Aquariums (250 Watts / 70-90 Gallons) : Pet Supplies](https://m.media-amazon.com/images/I/71LJkl2PdtL.jpg)
Amazon.com: Advatec Glass Aquarium Heaters - for Fresh & Saltwater Aquariums (250 Watts / 70-90 Gallons) : Pet Supplies
![Thermocontrol-E Dual 250 Watt (500 Watt) Aquarium Heater Kit - EHEIM Inkbird - SaltwaterAquarium.com Thermocontrol-E Dual 250 Watt (500 Watt) Aquarium Heater Kit - EHEIM Inkbird - SaltwaterAquarium.com](https://cdn11.bigcommerce.com/s-fh5tkm/images/stencil/1280x1280/products/5249/18711/thermocontroduall250kit__23487.1571081604.650.650__10505.1571242145.650.650__95325.1572453818.jpg?c=2)
Thermocontrol-E Dual 250 Watt (500 Watt) Aquarium Heater Kit - EHEIM Inkbird - SaltwaterAquarium.com
![Amazon.com : MarineLand Precision Submersible Heater, for Freshwater or Saltwater Aquariums, 250-watt : Pet Supplies Amazon.com : MarineLand Precision Submersible Heater, for Freshwater or Saltwater Aquariums, 250-watt : Pet Supplies](https://m.media-amazon.com/images/I/814Wh5VtdHL._AC_UF1000,1000_QL80_.jpg)