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


















The temp is set at 80, but after dipping my finger tip into the water tank it felt like room temp water. Setting the temperature is very self explanatory and the installation was easy to do. However, as long as Joseph’s happy then I’m happy.
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