Review on 🌡️ Aqueon 7.5 Watts Flat Submersible Heater by Jessica Sanchez

I use this heater in my 3 gallon aquarium during the winter and late fall when my central heating is set to 72 it keeps my aquarium between 78 and 80. In the spring, summer and early fall i need to swap out this heater for a smaller one as my summer house temp is 74-75 and this heater heats a 3 gallon tank over 80. So plan to keep this heater warm in your house. 3 gallon tank 8 degrees above room temperature. Probably warm 5 gallons 5 degrees above room temperature. You cannot control the temperature of this heater. As for any feedback that the heater killed their fish? Maybe they didn't completely submerge the heater in the water? Place the heater in the tank and let it sit for 30 minutes before plugging it in and always unplug it at least 30 minutes before you want to remove it from the tank.