![Amazon.com: hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon : Pet Supplies Amazon.com: hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon : Pet Supplies](https://m.media-amazon.com/images/I/61JIEIkReIL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon : Pet Supplies
![50 Watt Adjustable Temperature Submersible Water Heater - The Tye-Dyed Iguana - Reptiles and Reptile Supplies in St. Louis. 50 Watt Adjustable Temperature Submersible Water Heater - The Tye-Dyed Iguana - Reptiles and Reptile Supplies in St. Louis.](https://cdn11.bigcommerce.com/s-ldfio/images/stencil/1280x1280/products/3750/5338/apip3dze7__80537.1594041221.jpg?c=2)
50 Watt Adjustable Temperature Submersible Water Heater - The Tye-Dyed Iguana - Reptiles and Reptile Supplies in St. Louis.
![Amazon.com: HITOP 25W 50W 100W 200W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W) : Pet Supplies Amazon.com: HITOP 25W 50W 100W 200W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W) : Pet Supplies](https://m.media-amazon.com/images/I/61d8N9OLgcS.jpg)