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Your cart is empty.Bringing Color to Life: GloFish® fluorescent fish add an alluring array of brilliant colors to any aquarium. With a full range of vibrant aquarium kits, lighting and décor, consumers can create an underwater fluorescent wonderland. Transform any aquarium into a GloFish environment at the click of a switch. The GloFish® Submersible Heater is designed to keep your aquatic fish comfortable, with an electronic thermostat that automatically maintains a consistent water temperature of 78 degrees and prevents overheating, extending heater life. An indicator light lets you know when the water is heating (red light) and when it reaches the proper temperature (green light). Inside, silicon carbide crystals improve heat distribution and transfer. The strong glass tube is heat and shock resistant. This submersible heater is easy to use – just attach to the inside of the aquarium wall using the suction cup (included) in an area with good water circulation. Use the GloFish® Submersible Heater in aquariums up to 10 gallons. This heater is UL Listed. Born Brilliant™. GloFish fluorescent fish are born with their dazzling colors! Not injected or dyed, they inherit their hues from their parents and add an alluring array of colors to any aquarium. With a full range of vibrant aquarium kits, lighting and décor, consumers can create an underwater fluorescent wonderland. Transform any aquarium into a GloFish environment at the click of a switch.
Jennifer Naue
Reviewed in the United States on March 11, 2025
Perfect for my fish tank. This little heater was very easy to install. It keeps the temperature of the fish tank exactly what it’s supposed to be.
Customer
Reviewed in the United States on February 28, 2025
Great price!
paul s
Reviewed in the United States on January 11, 2025
Nice simple heater. All you have to do is plug it in and it does the rest. It keeps the water at or around 78 give or take a few degrees. I have bought a few for my tanks and will buy more when needed.
cstrbl
Reviewed in the United States on January 11, 2025
I wouldn't go anything larger than the stated 10gal capacity, it won't be able to keep up.
ChezzieMoss
Reviewed in the United States on September 16, 2024
Grabbed this unit for my veil tail Betta fish that happily resides in a 3-Gal fish tank. Since the moment I placed it in (with good water circulation), she started swimming towards it and enjoyed circling around it. This fish-tank heater has been working steadily and able to maintain a stable and ideal temperature that makes my Betta happy and stay healthy. Just one advice, please check and clean the heater periodically, the basic maintenance is still needed.
Ray
Reviewed in the United States on September 16, 2024
We used the unit for our Glofish tank. Worked great for the first 3 weeks but now the tank is about 71F which is the same as the room. I would not recommend this heater.
Mark Tibai
Reviewed in the United States on October 15, 2024
I have had this water heater for a little over two months now. It turns on and off just like it says and it keeps the water temperature in the proper range. Highly recommend.
Charles S. Trotter
Reviewed in the United States on January 29, 2024
Works fine but there is only one temperature setting and it is a bit warmer than I wanted. Worse fine and certainly not to warm so I am using it.
Alejandra González Rodarte
Reviewed in Mexico on June 12, 2023
Funciona excelente para la pecera que compré mi pez esta feliz y nada más
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