hygger submersible aquarium heater with an adjustment knob can be used for small betta coral tanks, suitable for both saltwater and freshwater, it is designed especially for 15-80 gallon fish tanks. A very compact ETL Certification aquarium heater, and easy to hide in the aquarium.
ETL Certification Aquarium Heater
hygger 998 Aquarium Heater is certificated by ETL with a quality advantage. It is double-protected and has passed UL certification. For safety, a fuse is installed inside. When the aquarium heater is plugged in, the fuse will be automatically disconnected after the heater is out of the water for more than 3 minutes, and the fish tank heater will not be damaged.
Note: At this time, even if you put the heater back to the water, the heating work indicator is still on, but not working again.
Automatic Stop & Restart
You can set the temperature from 68℉-93℉ to maintain constant and stable temperatures for fresh or marine water, and the exactness is within 2 degrees Fahrenheit. As a fully submersible water heater, it includes two suction cups for mounting in any suitable position horizontally or vertically.
Heater + Thermometer
The thermometer monitoring range is 0°C ~ 50°C/32℉ ~ 122℉. It has a long-lasting power supply and a replaceable Battery.
Three-digit digital display makes monitoring more accurate and can monitor the temperature in real time.
The mini body is adsorbed on the wall of the fish tank, so there is no need to worry about taking up space. The thermometer has powerful functions, a built-in temperature probe, and a display to one decimal place.
Durable Quartz Glass
This 998 aquarium heater tube is made from heat-resistant quartz glass, up to 2mm Explosion-proof glass. So it can be used in freshwater and saltwater aquariums, and the service life can be 3 years or more. Use white alundum sand as the heat-conducting media.
Fully Submersible
This heater is also waterproof. It must be fully submerged in water when working. Place it horizontally or vertically near the water intake or the way where water flows.
Overheat Protection
The heater will automatically shut off once the water temperature is over 93℉.
Directions for Use
How to use Hygger ETL Certification Aquarium Heater
1. According to your aquarium, choose the temperature you want.
2. ROTATE – After determining the temperature, turn the rotary knob to rotate the red indicator bar to the temperature scale bar you want.
3. SUCK – Install the suction cup into your fish tank, making sure that the heater is completely immersed in the water.
4. RUN – Plug in the power, the work indicator light turns on, and the heater starts to work.
About the thermometer
1. Comes with a battery, please tighten it when installing. After the battery is installed, if there is no display, it may be that the battery is out of power or the battery is installed in the wrong direction.
2. Attach the suction cup part to the fish tank wall, and then move the display. The screen and the suction should not be on the same horizontal line but at different angles.
How to Adjust the Heater Temperature?
Rotate the knob on the temp controller to set it to your desired temperature. The temp range is 68-93℉.
Useful Tips
1. For a better experience and to heat the aquarium safely, please carefully read and follow the user manual.
2. Keep the aquarium heater fully submerged in water.
3. Stick the heater horizontally or vertically onto the tank side near the water intake or on the way of water flow.
4. Don’t bury the heating rod in sand or stones.
5. Please keep the temp controller away from water.
6. Please don’t connect the power before the heater is well installed.
7. Wait for the heater rod to cool down before you move the heater or change the water.
This heater does a great job heating my tank. It is easy to use. I like the suction cup mount because it is more sturdy than many other heaters I have had in the past.