Product: hygger 100W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 10-30 Gallon
Brand: hygger
Hygger mini quartz glass aquarium heater is specially designed for small and medium size tank use.
This fish tank heater is very safe and durable, milky quartz material made, can resist a high temp of 1800℉, 
excellent in explosion-proof & shatter-resistant.
The service life can be more than 3 years if only using in fresh water.

There is a led indicator light on the temp controller.
When the tank heater is heating, the indicator light is red. When it stops heating, the light is off.

When does the heater stop and restart heating?
 The aquarium heater is very reliable to maintain the water temp as your set. It will stop heating when the water 
temp reaches to
the set temp and will restart heating when the temp is 1.5-2℉ below the set temp.

Over heat protection
The aquarium heater will auto shut off once the water temp is over 97℉.
How to adjust the temp?
 Rotate the knob on temp controller to set it to the desired temp. Temp range is 68-90℉.


Size Chart
Power & Tank: 50W (5-15gallon） 100W (10-30gallon)
Heater Length: 5inch 7inch 
 If the room temp is lower than 50℉, please buy a larger wattage heater.

Do’s and Don’t’s
1. For better experience and aquarium safety, 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. Please wait the heater rod to cool down before you move the heater or change the water.

Specification:
 Voltage: 110-120V 
Frequency: 60HZ 
Cable Length: 4.6ft

Package Includes:
1 Aquarium Heater
 1 User Manual
🐠 【For Fish Tank 10-30 gallon】100W aquarium heater, voltage AC110-120V 60HZ, power cord is 4.6ft. Heater rod length is 7 inch, mini compact heater for small fish tank use. Perfect for betta tank. A very compact heater, easy to hide in the tank
🐠【Automatic Stop & Restart】Effectively maintain the tank water in the constant temp you set, stop heating when water temp reaches to the set temp and restart heating when the water temp is 1-2℉ below the set temp.The indicator light on the controller will be on red when it's heating, will be off when it stop heating
🐠【With Built-in Thermometer】you can set the the temp from 68℉ to 90℉,temp exactness is within 2 degrees in fahrenheit. There is a built-in thermometer in the heater to detect the water temp, not need to buy seperate thermometer
🐠【Durable Quartz Glass】this aquarium heater tube is heat-resistant quartz glass made, excellent in explosion-proof, can be used in fresh water and salt water aquariums, white alundum sand as the heat-conducting media, service life can be 3 years or more
🐠【Fully Submersible】this fish tank heater is waterproof, must be fully submerged in water when working, place it horizontally or vertically near the water intake or where the way of water flow

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