![Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank (100W for 10~30 Gallon) : Amazon.ca: Pet Supplies Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank (100W for 10~30 Gallon) : Amazon.ca: Pet Supplies](https://m.media-amazon.com/images/I/71-mY5E2QpL._AC_UF1000,1000_QL80_.jpg)
Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank (100W for 10~30 Gallon) : Amazon.ca: Pet Supplies
![AQQA Small Aquarium Heater 15W/25W/50W/75W/100W Submersible Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller for Betta Fish Tank and Turtle Tank 15W (for 1-5 gallon) AQQA Small Aquarium Heater 15W/25W/50W/75W/100W Submersible Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller for Betta Fish Tank and Turtle Tank 15W (for 1-5 gallon)](https://www.gosupps.com/media/catalog/product/cache/25/image/1500x/040ec09b1e35df139433887a97daa66f/8/1/81OMNack01L._AC_SL1500_.jpg)
AQQA Small Aquarium Heater 15W/25W/50W/75W/100W Submersible Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller for Betta Fish Tank and Turtle Tank 15W (for 1-5 gallon)
![U-picks Submersible Aquarium Heater 100W/300W/500W Fish Tank Heater with Intelligent External LED Digital Temperature Controller and Dual Temp Displays for Turtle Betta Fish Tank 5-130 Gallon 100W (for 5-25 gallon) U-picks Submersible Aquarium Heater 100W/300W/500W Fish Tank Heater with Intelligent External LED Digital Temperature Controller and Dual Temp Displays for Turtle Betta Fish Tank 5-130 Gallon 100W (for 5-25 gallon)](https://www.gosupps.com/media/catalog/product/cache/25/image/1500x/040ec09b1e35df139433887a97daa66f/6/1/61N4VD9YRXL._AC_SL1100_.jpg)
U-picks Submersible Aquarium Heater 100W/300W/500W Fish Tank Heater with Intelligent External LED Digital Temperature Controller and Dual Temp Displays for Turtle Betta Fish Tank 5-130 Gallon 100W (for 5-25 gallon)
![Tetra Submersible Aquarium Heater 100W, HT30 for 10-30 Gallon Fish Tanks : Amazon.ca: Tools & Home Improvement Tetra Submersible Aquarium Heater 100W, HT30 for 10-30 Gallon Fish Tanks : Amazon.ca: Tools & Home Improvement](https://m.media-amazon.com/images/I/81Ic0gLmBNL._AC_UF1000,1000_QL80_.jpg)
Tetra Submersible Aquarium Heater 100W, HT30 for 10-30 Gallon Fish Tanks : Amazon.ca: Tools & Home Improvement
![Tank heater struggling…20G long, open top, 100W heater. Add another small one or get a bigger heater? : r/Aquariums Tank heater struggling…20G long, open top, 100W heater. Add another small one or get a bigger heater? : r/Aquariums](https://preview.redd.it/tank-heater-struggling-20g-long-open-top-100w-heater-add-v0-fy34jmglgvaa1.jpg?auto=webp&s=671b2e64da4a0b2d21d673605e61397970535e09)