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Zacro AH049 Submersible Aquarium Heater with Visible Temperature and Floating Thermometer with Suction Cup, 300W, Black

Zacro submersible 300-watt heater is very easy to use for aquariums ranging from 53 to 99-gallons. The visible temperature setting can be set and adjusted temperature between 65-93 Fahrenheit or 20-34 centigrade degrees.


1. Maintain constant and stable temperatures for your aquatic creatures to thrive with Zacro’s 300w aquarium heater.
2. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 99-gallon.
3. This powerful aquarium heater also has double insulation and is made from high quality insulated glass.
4. This aquarium heater is operating a cycle as heating 5-10 minutes and then stop heating for 5-10 minutes.
5. The aquarium heater is provided with an extra LCD digital thermometer to show the accurate tank temperature to avoid overheat or freeze.


1.Usage: Before powering, Make sure the heater is completely submerged in the water.
2.Removal: Before removing the heater out from the water, Make sure the heater is unplugged to avoid dry heating.
3.In order to maintain constant and stable temperatures of the water, the product is operating as staged heating, the aquarium heater will work for a while, and then stop heating some time, normally the interval is 5-10 minutes.

Package included:

1 x Zacro Submersible Aquarium Heater

1 x Zacro LCD Digital Thermometer

1 x Aquarium Heater Introduction


18-month warranty. Any questions you have, please don’t hesitate to contact us. We will get you back within 24 hours.

Product Features

  • Waterproof and double sealed material–plastic and black protective container for scald-preventing and anti punching
  • Apply to sea water and fresh water
  • Visible temperature setting, temperature adjustable of between 65f 93f
  • Tank capacity: up to 99 gallons, voltage/free: 110-120volt/60hertz
  • Provided with an thermometer to show the accurate tank temperature to avoid overheat or freeze

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  1. Edward Henline says:

    This is so much nicer than I expected. It is a lot larger and better made than the ones I bought at the pet store.

  2. Gabrielle Pannebaker says:

    Amazing Combination Heater And Thermometer Set

  3. Rene H. says:

    Best Heater choice

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