Hygger Mini Quartz Glass Aquarium Heater with External Controller 50W

• [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
• [For Fish Tank 5-15 gallon]50W aquarium heater, voltage AC110-120V 60HZ, power cord is 4.6ft. Heater rod length is 5 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

This design in power 100W:

•  [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
• [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
• [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