Marineland Precision Heater for Aquarium

Amazon.com Price: $17.96 (as of 25/03/2022 06:56 PST- Details)

This 50 watt heater is for aquariums up to 12 gallons. Adjustable temperature dial allows you to set the temperature 1 degree with every click.
Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability