Why You’ll Love It
Comes with power-off memory function, hygger 206 nano heater features overheating protection and low water warning for small fish tanks from 3 to 20 gallons. It is made by a quartz glass heating element, has a temperature range from 59℉ to 93℉, and the controller keeps the last set temperature after a power outage.
Key Features
Hidden Quartz Heating Element
This HG206 nano aquarium heater measures won’t take up too much space in small fish tanks 3-20 gallons. Combined with its low-profile design, it can be easily hidden in the corners without affecting the aquarium’s aquascape.

Alarm Reminder Function
The temperature control system features overheat fault alarms and a low water level safety reminder.
-When the heating rod is exposed to air, the nano heater will flash the Er error code and sound an alarm.
-When the water temperature is over 95°F(or lower than 54°F), it will stop working, then flash EE (Eu) error code and sound an alarm.
Note: You can handle the abnormal state of the heater to clear the alarm manually.
Power-off Memory Function
When the nano heater is powered off and then restarted, it keeps the last set temperature, and no need to reset it after a power outage.

Keep a Stable Temperature
The HG206 nano heater has an easy-to-read external controller that allows flexible temperature adjustment from 59°F to 93°F; the status indicators let you easily check its operation.
Explosion-proof Quartz Material
This nano aquarium heater is made of explosion-proof quartz glass tube and high-temperature resistant nickel-chromium heating wire, with a porous ABS shell to dissipate heat faster and a long 6.5ft Power cord for easy installation.

Work For 3-20 Gal Small Tanks
hygger 206 nano heater rod built-in a temperature probe that can real-time monitoring of water temperature with an accuracy of ±2°F, it is suitable for freshwater aquatic pets such as betta, shrimp, snails, and shallow water turtles.
Usage Tips
When Overheating:
- Unplug and wait for the heater to cool down when overheated.
- Check if the heater is heating up when the water temperature is too low.
When Low Water Warning:
Add water to submerge the heating rod, or move the heating rod downward to prevent it from being exposed to the water surface due to water evaporation.

Tips:
- Power cord length 6.5ft.
- Keep it off the gravel or sand, as the difference in heat conductivity between the water and substrate could result in the heater glass cracking.
Specification

Package:
1 x Heater rod with an external controller
1 x User manual
















Great little heater for my shrimp
Love this little heater! I’ve always struggled to keep my smaller tanks heated correctly with cheap, “small tank” heaters and I hate how much space the typical 100w heaters take up, so I decided to see what Hygger had and I’m so glad I did! This heater has freed up so much space in my 6gal cube tank, and I can sleep peacefully knowing I won’t wake up to cooked shrimps from a malfunctioning heater thanks to the safety features!
Keeps the temperature in the tank pretty evenly
Great heater
The 30 watt heater works well for my 5 gallon betta tank. I put it by the filter outflow at one end of the tank and it distributes the heat quickly throughout the entire tank. I set it at 82 degrees and the temp goes back and forth between 81 to 82. Pretty accurate.
All hygger products have been a hit for me so far. I’ll keep coming bavk