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Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon

4.4 4.4 out of 5 stars 14,212 ratings
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Amazon's Choice in Aquarium Heaters by Tetra

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2-10 Gallon

Purchase options and add-ons

  • All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached..All Tetra HT Heaters will shut off if an electrical short is detected for your safety.
  • The HT10 uses a built in electronic theromstat to automatically maintain water at 78° F which is ideal for most tropical fish. No adjustment is requried.
  • Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
  • The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other décor.
  • Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
  • All Tetra HT Heaters will shut off if an electrical short is detected for your safety.

Customer ratings by feature

Easy to install
4.5 4.5
Comfort
4.3 4.3
Suction power
3.9 3.9
Value for money
3.8 3.8

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Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon
Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon
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Price-41% $11.79
List:$19.99
$14.99$9.99-59% $8.38
List:$20.59
$12.29$15.97
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Suction power
3.9
4.4
3.8
4.1
4.5
4.1
Accuracy
3.4
3.3
3.0
3.6
4.3
3.6
Temperature Control
3.3
3.3
3.0
3.7
4.6
3.6
Value for money
3.8
4.3
4.1
4.3
Sold By
Amazon.com
PULACO
FREESEA
Amazon.com
WinnerDirect
HITOP

From the manufacturer

-

Tetra HT Submersible Aquarium Heater With Electronic Thermostat

Tetra's HT line of heaters are easy-to-use and work in aquariums ranging from 2 to 55 gallons. The heaters have electronic thermostats that automatically adjust heat output to keep water at a constant 78 degrees F. All HT heaters have indicator lights to let you know when the heater is on, heating the aquarium.

All Tetra HT heaters have red/green indicator lights to let you know when the heater is heating(red) or on standby(green). The low voltage thermostat maintains water at 78°F without any adjustment required. Be sure purchase the correct heater for your tank size. Buying a heater too small for your tank can cause under heating. It is critical to ensure your tank is equipped with a hood or glass canopy to contain the heat inside the aquarium. All Tetra HT Heaters will shut off if an electrical short is detected for your safety.

Product guides and documents

Looking for specific info?

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 5.25 x 1.62 x 3.5 inches; 3.6 ounces
  • Item model number ‏ : ‎ 26447
  • Department ‏ : ‎ Unisex-Adult
  • Date First Available ‏ : ‎ March 22, 2007
  • Manufacturer ‏ : ‎ Tetra
  • ASIN ‏ : ‎ B000OQO69Q
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.4 4.4 out of 5 stars 14,213 ratings

Product Description

Tetra® HT 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. The Tetra HT Submersible Heater is available in different wattages to fit your aquarium: use the 50-watt HT10 in 2 to 10 gallon aquariums; 100-watt HT30 for 10 to 30 gallons; 150-watt HT40 for 30 to 40 gallons; and 200-watt HT55 for 40 to 55 gallons. This heater is UL Listed. Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.

Important information

Directions

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
14,213 global ratings

Customers say

Customers like the value, performance, and ease of use of the pet supplies. For example, they mention it's affordable, works perfectly, and easy to set up. That said, some disagree on suction cup, quality, temperature, and light.

AI-generated from the text of customer reviews

1,291 customers mention953 positive338 negative

Customers like the performance of the pet supplies. They mention that it works well, is attractive, and effective. Some say that it's great for chickens, tanks, and tropical fish.

"...No complaints I this heater, works like it is supposed to, easy to set up and direct take up too much room in the tank." Read more

"Inexpensive but well made and works perfectly. Our 15 gal tank temp stays where it should even with cooler temps at night. Seems like a great product." Read more

"Nice compact heater that works well...." Read more

"...it kept my 3 gallon tank warm and my betta happy... until it stopped working last night after I cleaned the tank and changed partial water...." Read more

313 customers mention239 positive74 negative

Customers like the value of the pet supplies. They mention it's great for the price and affordable.

"Inexpensive but well made and works perfectly. Our 15 gal tank temp stays where it should even with cooler temps at night. Seems like a great product." Read more

"Works great, and at a great price." Read more

"Great value and easy to use...." Read more

"...Although inexpensive and NOT adjustable ( which clearly stated in description), it has performed great...." Read more

228 customers mention175 positive53 negative

Customers like the size of the pet supplies. They mention it works great and is the perfect size for their little fish tank. Some say that it's compact and easy to set up. That said, some say it takes up too much room in the tank.

"...heater, works like it is supposed to, easy to set up and direct take up too much room in the tank." Read more

"It’s winter time and this heater is perfect fit in good size for 5 gallons tank, it didn’t pick up too much room...." Read more

"...this heater for my new 11 gallon bookshelf aquarium because the size was perfect. I needed a heater that was short and I trusted the brand...." Read more

"...this is a bit bigger than I had anticipated...." Read more

219 customers mention207 positive12 negative

Customers find the pet supplies easy to use. They say it's easy to set up, convenient, and has been the cheapest and easiest thing to completely improve their beta's quality of life. The indicator light makes it easy to do a quick check. Customers also say the Submersible Aquarium Heater is straightforward, works well, and highly economical. It's ready right out of the box and is very unobtrusive.

"...No complaints I this heater, works like it is supposed to, easy to set up and direct take up too much room in the tank." Read more

"Great value and easy to use...." Read more

"Easy install" Read more

"Very simple." Read more

1,437 customers mention800 positive637 negative

Customers are mixed about the temperature of the pet supplies. Some mention it's really good at keeping a steady temperature, and their water stayed warm. However, others say that it can't keep the temperature about 75 degrees for 3 gallons, and the temperature is preset.

"...Keeps it right around 75 degrees, in the winter my horse stays at about 65 degrees so I know it is working well...." Read more

"...to do that, this isn't the unit for you as it features no ability to set a different temp than what it come programmed with...." Read more

"Nice compact heater that works well...." Read more

"...n't be able to check the temp but I assured him that the water was noticeably cold to touch in comparison to the warm water that has been consistent..." Read more

734 customers mention461 positive273 negative

Customers are mixed about the quality of the pet supplies. Some mention that it's very reliable and well made, while others say that it was defective and did not last a year.

"Inexpensive but well made and works perfectly. Our 15 gal tank temp stays where it should even with cooler temps at night. Seems like a great product." Read more

"A glass aquarium heater came in original, flimsy box, in a plastic shipping bag. Zero protection for the glass heaters...." Read more

"...heaters and I like the Tetra brand the best because it's reliable to keep the water at or near the 78 degree mark and lasts for a few years typically..." Read more

"Perfect for my Betta tank. Keeps temperature where it said it would. I've had it for three months now." Read more

144 customers mention68 positive76 negative

Customers have mixed opinions about the light on the pet supplies. Some mention that it's helpful and nice LED indicator light, while others say that it hardly ever turns on.

"...The light is green and will occasionally turn red for a few seconds before going back to green..." Read more

"...It lights up when heating and is really good at keeping a steady temperature. My fish and snails are happy so I am happy!" Read more

"...Checked that everything was properly plugged in and the heaters light was not coming on so touched it and there was no warmth...." Read more

"...So far the light has never not been green (aka it's always been at the "right" temperature which I confirmed with a thermometer) other than for a..." Read more

87 customers mention41 positive46 negative

Customers have mixed opinions about the suction cup of the pet supplies. Some mention that it holds well, while others say that it doesn't hold well.

"...the suction cup is not perfect. IT doesn't come off, but this is a long enough tube that I wish they had put two suction cups on it...." Read more

"...Suctions well to tank. When the light is green, water temperature is stable. Light shines red when water is heating...." Read more

"...the power cord it can lay a little crooked as it does only have one small suction cup which you can slide up and down however it would be nice to..." Read more

"...Rocks a steady 80 degrees, cheap and easy. The little suction cups don't suck but is on an inside of a plastic 5 gallon bucket...." Read more

Weird packaging, but works perfectly.
4 Stars
Weird packaging, but works perfectly.
I was concerned when i first opened it as it looks like it’s second hand, and i ordered one believing it to be brand new. it didn’t really look dirty or used tho, so maybe it was just defective packaging. when i turned it on it heated up very fast and burned my hand, (totally my fault tho i didn’t even read the directions) so it definitely does what it’s supposed to lol. id recommend, i only didn’t give 5 stars bc of the packaging.
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Top reviews from other countries

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J.B.
5.0 out of 5 stars So far so good
Reviewed in Canada on January 16, 2024
Size: 2-10 GallonVerified Purchase
3 people found this helpful
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Kelly
5.0 out of 5 stars Good product
Reviewed in Canada on November 18, 2023
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FERNANDO
5.0 out of 5 stars buen producto excelente para el marineland de 3gal
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Addison
5.0 out of 5 stars Works For My 25 Gallon.
Reviewed in Canada on October 6, 2023
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Marie
5.0 out of 5 stars Parfait
Reviewed in Canada on July 16, 2023
Size: 10-30 GallonVerified Purchase