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Tetra HT Submersible Aquarium Heater

| 6 answered questions

List Price: $19.99
Price: $9.99 & FREE Shipping on orders over $35. Details
You Save: $10.00 (50%)
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Want it tomorrow, April 24? Order within and choose One-Day Shipping at checkout. Details
50-watt
  • No adjustment required
  • Easy to conceal
  • Two year warranty
  • Please read all label information on delivery
40 new from $7.69 3 used from $7.92

Frequently Bought Together

Tetra 26447 Submersible Aquarium Heater, 50-Watt + Aqueon 06080 QuietFlow 10 Power Filter, 100GPH
Price for both: $18.98

Buy the selected items together


Special Offers and Product Promotions

Size: 50-watt
  • Buy Used and Save: Buy a Used "Tetra 26447 Submersible Aquarium Heater, 50-Watt" and save 60% off the $19.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

Product Details

Size: 50-watt
  • Product Dimensions: 5.2 x 1.6 x 3.5 inches ; 2 pounds
  • Shipping Weight: 8.8 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000OQO69Q
  • Item model number: 26447
  • Average Customer Review: 3.0 out of 5 stars  See all reviews (206 customer reviews)
  • Amazon Best Sellers Rank: #2,718 in Pet Supplies (See Top 100 in Pet Supplies)
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Product Description

Size: 50-watt

This Tetra submersible 50-watt heater is very easy to use for aquariums ranging from 2 to 30-gallons. The electronic thermostat automatically adjusts heat output to keep the water at a constant 78 degrees Fahrenheit. All you have to do is put it in the aquarium and plug it in.


Customer Questions & Answers

Customer Reviews

I lost several fish because the water got too cold.
PROGBEAR
I had the heater for about a year and it worked fine until one day it stopped functioning.
K. Michaud
The temperature in the tank has been holding at a steady 68-70 degrees, WITH the heater.
Liz W.

Most Helpful Customer Reviews

65 of 70 people found the following review helpful By Brie on June 17, 2011
Size Name: 50-watt
I wish I could give this product a worse score than 1 star. Purchased this heater from Wal-mart in a pinch because the heater that came with the aquarium broke (was a very cheap one) and I didn't want the temperature to drop since it was winter. Kept an eye on the thing for the first few weeks of having it and everything seemed to be ok. This week the dumb thing short circuited because it got water inside somehow and continually heated the tank. I discovered this when I got home from work. I noticed unusual behavior in a frog I had in the aquarium. On further inspection my other frog was already dead on the bottom of the tank and the water was almost 100 degrees F. The frog that was still alive was just floating in the current from the filter and had a bad fungal infection that had sprouted up overnight. Removed him to a treatment tank and did what we could but the poor guy didn't make it. This is a horrible product. I would not recommend this to anyone and I wish I hadn't bought the product because I lost 2 very dear pets.
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37 of 41 people found the following review helpful By S. Pinkston on December 7, 2009
Size Name: 50-watt
I have purchased 3 of these Tetra Heaters in the past 5 months, and all of them have quit. The warranty only allows you to pay shipping both ways, either to fix yours, or they will send another one. I do not want any more of these Tetra heaters, and am looking for another brand. I wouldn't waist your money.
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27 of 32 people found the following review helpful By Kameron on January 11, 2012
Size Name: 50-watt Verified Purchase
Many people that are rating this product with a 1 or 2 star clearly are not using it right, saying it is going out or not heating hot enough. To use this heater properly, you must sit the heater in the aquarium water for 30 minutes before even plugging it in. This is to set the thermostat inside the heater. Also, you must place the heater set up 90 degrees or laying flat parallel with the bottom of the tank. Another reason it may stop working is, once you turn off the heater you must leave it in the water for 15 minutes before taking it out.

Bottom line is, this is a great heater. I use 3 of them total, one for a 10 gallon saltwater nano reef, one for a 10 gallon freshwater aquarium, and one to heat up my water change water. This is one of the best compact heaters I have used, compared to two other more expensive heaters. This is also definitely the cheapest place to find the heater (on amazon), in my local fish stores it runs $17. Ignore the reviews by people that probably didn't even read the instructions before sticking it in their tank and saying it doesn't work right. No adjustments need to be made with this heater and that is one of the greatest things about it also.

Pros:
Red light when heating
Green light when temperature is correct
Small and compact
Cheap price
Good quality
Fully Submersible
Heats up to 10 gallons
Consistent temperature
Rubber protects the glass heating tube

Cons:
Cannot change the temperature if desired.
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8 of 10 people found the following review helpful By K. Michaud on March 14, 2009
Size Name: 50-watt
I had the heater for about a year and it worked fine until one day it stopped functioning. I would not buy again.
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2 of 2 people found the following review helpful By Adam Grey on October 9, 2013
Size Name: 50-watt
I owned this product for about two years. I thought it was really great. Kept my betta and pleco nice and toasty, until a week ago when it shorted and cooked both of my fish. I was extremely upset and will NEVER be buying this product EVER again. Sure, send it back and get a new one, but the fish are already medium-rare.
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2 of 2 people found the following review helpful By big o on September 4, 2013
Size Name: 100-watt Verified Purchase
Good product, doing what it say's it woold.
Have it on my 29 gallon at a steady 79.
for the price you can't beat it.
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2 of 2 people found the following review helpful By Latonia Sims on September 1, 2013
Size Name: 50-watt Verified Purchase
This heater has met all of our needs, we are beginner fish owners and after research found the right heater. It has not disappointed.
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2 of 2 people found the following review helpful By John on June 9, 2012
Size Name: 100-watt
I have had an aquarium for 49 years and this is by far the poorest quality and least reliable heater I have ever had. My first purchase was returned for warranty replacement after 7 months. So thinking this was just a fluke, I purchased another in the meantime while waiting for my warranty replacement. Well, that one failed after 4 months. A little wiser, I then bought another brand....
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