Why You’ll Love It
Keep your aquatic pets safe and comfortable with the hygger 142 nano heater, designed for small tanks up to 15 gallons. Perfect for betta fish, shrimp tanks, nano reefs, and shallow turtle habitats, this compact submersible heater delivers precise, reliable temperature control with intelligent safety features you can trust. Small, big on safety and performance to protect tank inhabitants.
Key Features
Smart Safety Alerts with Auto Shut-Off
Built-in dry-run protection and overheat guard instantly shut off the heater and trigger audible alarms and LED error codes (“Er”, “EE”, “EU”) in case of low water or temperature irregularities, preventing damage or injury.
Precision Temperature Control (59°F–93°F)
Easily set your preferred temperature using the external digital controller—no need to put your hands in the water. Real-time temperature display and indicator lights let you know when the heater is actively warming or in standby mode.
Compact, Low-Profile Design
At just 4″ x 12″ x 1″, this sleek nano heater blends into your tank’s environment and fits discreetly in 1–15 gallon tanks, including quarantine tanks, breeding tanks, and paludariums. Ideal for tight spaces without compromising performance.
Auto-Memory Function
In the event of a power outage, the heater remembers your last set temperature—no need to reset after power resumes. Ensures uninterrupted care for your sensitive aquatic species.
Fully Submersible with Easy Installation
Mount the heater vertically or horizontally using the included suction cups. Works best when placed at least 5 inches below the water surface and in an area with water flow. The waterproof quartz glass body resists cracking and corrosion, even in saltwater setups.
Energy-Efficient & Silent Operation
Engineered for quiet heating, this nano heater runs efficiently without disturbing your fish or your space, perfect for bedroom or office tanks.
Ideal For:
- Betta, shrimp, and nano reef tanks (1–15 gallons)
- Turtle tanks with shallow water setups
- Quarantine and breeding tanks
- Paludariums and freshwater/saltwater tanks
Usage Tips
Before Installation
- Inspect the heater for any visible damage. Do not use if cracked or broken.
- Verify tank size compatibility: Designed for tanks between 1–15 gallons only.
- Make sure your power source is UL-certified and avoid using extension cords.
Installation Instructions
- Use the included suction cups to mount the heater vertically or horizontally.
- Ensure placement is at least 5 inches below the water surface.
- Position it in an area with moderate water flow for even heat distribution.
- Keep the heater away from gravel, substrate, decorations, and other objects to avoid overheating or malfunction.
- Do not bury the heater under gravel or sand.
- Plug the digital controller into the heater.
- Mount the controller outside the tank for easy access and monitoring.
Setting the Temperature
- Current water temperature
- Heating status (active or standby)
Safety Features & Alerts
- Dry-Run & Overheat Protection
- Auto-Memory Function
Cleaning & Maintenance
- Unplug the heater and allow 15 minutes to cool before handling.
- Rinse monthly with fresh water if used in saltwater tanks to prevent buildup.
- Use a soft cloth to gently wipe the heater; avoid using abrasive pads or chemical cleaners.
Safety Reminders
- Do not operate the heater dry—always keep it fully submerged.
- Never plug in or remove the heater with wet hands.
- Avoid placing near magnetic objects, which may interfere with sensors.
- Regularly inspect for signs of wear or damage.
Specification
Package:
1x Heater rod with an external controller
1x User manual
People Also Buy
I installed this heater into my wife’s 10 gallon aquarium. It holds the temperature at the 77 degree set point and stays there. I have not seen it fluctuate more than 1 degree. This is a great heater
Gerald
Well desiguised and easy to manage settings.
This aquarium heater is really neat. It has a temperature controller that allows the user to set a certain temperature of the fish tank. It will hold that set point within 1 degree Fahrenheit. I had a fluval heater that was preset to 77 degrees but with the led lights on on the aquarium, this added even more heat to my fish tank. I am very pleased with this heater from hygger
Photo’s
Excellent product! I’ve a 180 fresh water and it does exactly what it states. Keeps the tank at a consistent temperature. The light is SUPERB tells you precisely what the temperature in the tank is at all times – from all the way across the room – visibility! Highly recommend. No other heater has worked as consistently
LOVE IT! So nice to have a small heater that you can adjust the temperature.