Hygger 10-20 Gallon Small Aquarium Heater

Safe and Rugged Construction - Constructed with a shatterproof quartz tube, wrapped in a dual heating element mica plate and nickel wire, hygger's submersible fish tank heater ensures the safety of your pets while maintaining proper temperature.

At-a-Glance Temperature Display - The heater rod displays the real-time water temperature, with a red indicator light when in use and a green light when the desired temperature is reached.

External Knob Controller with Memory Function - An easy-to-use external knob controller allows you to quickly set the temperature without getting your hands wet, especially in winter. The adjustable temperature range is from 59°F to 93°F in 1-degree increments. The last setting will be remembered upon unplugging for water changes.

Out of Water Shut-Off Protection - An out-of-water shut-off feature ensures the heater doesn’t overheat and cause harm to your livestock. It automatically turns off before the water temperature exceeds the desired level.

Shatterproof Plastic Guard - A shatterproof plastic guard protects your fish or turtles from impact and accidental contact. The guard is easy to detach for cleaning.

Ideal for Small Fish Tanks - With a slim and flat profile, measuring 4.3"x1.8"x0.9", this mini tank heater is quiet, space-saving, and easy to hide behind filters, wood, or rocks with two strong suction cups for mounting. Its flat design allows it to be placed vertically or horizontally at the gravel-free aquarium bottom, perfect for heating low water level turtle tanks.