Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt
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List Price:
$28.99
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$19.27 FREE 1-3 dayShipping over $49
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Help keep your finned friend’s comfortable with Tetra’s HT55 Submersible Aquarium Heater & Electric Thermostat. This submersible heater comes with an electric thermostat that is specifically designed to keep 40 to 55-gallon aquariums at a constant 78 degrees Fahrenheit. The indicator lights turn red or green to let you know when it’s heating (red) or when it’s on standby (green). This heater can be installed vertically or horizontally inside your aquarium.
Key Benefits- Helps keep your aquarium at a constant temperature for your scaly sidekicks.
- No need to adjust the temperature—the built-in thermostat helps keep the water temperature at 78° F, which is ideal for most tropical fish.
- Install it vertically or horizontally to help conceal it behind plants or other décor.
- Comes with indicator lights to let you know when it's heating (red) or on standby (green).
- Specially designed for aquariums that hold between 40-55 gallons of water.
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Item Number164343
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Dimensions7.25 x 3.25 x 1.625 inches
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Fish TypeTropical Freshwater, Betta, Cichlid, Goldfish, Marine Fish
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MaterialPlastic
Customer Reviews
56% Recommend
56% of reviewersrecommend this product
You've Already Reviewed This Item
9 Reviews
9 Reviews
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do not buy
By 1234 on Sep 28, 2020
I bought this heater over 6 months ago. It worked fine but then we woke up to all are fish dead. The heater malfunctioned and cooked all of my fish :(
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Terrible heater
By Sami on Aug 30, 2020
Bought it a couple of months ago, worked fine for first month and now its not even warming water any more. Don’t waste money on this item
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terrible heater
By JanS on Aug 11, 2020
Have had less than a month and it’s not even heating my tank to 60 degrees now. My fish are angry now I have to hurry and get a heater! Waste of money.
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not a good idea
By Meme on Jun 9, 2020
Haven’t had mine very long- it has ALWAYS kept my tank cool... now it isn’t even working! I have Molly’s so they have the shimmies and I am in a hurry to get a good one! Never again
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Defective no green/red light
By Katz on Sep 10, 2019
Price was to good to be true.... I don’t know if I got a defective heater or if this was just one awful product over all. Very disappointed in tetra, my heater never turned red or green at any moment. I’m glad I had a back up 100W heater from aqueon which gave me enough time to go to my local pet store to purchase a 200w! My fishes would have probably died if I hadn’t notice this wasn’t working the minute I realized my temp was dropping drastically. I should have read the reviews on this same product but different WATT, if you realize majority of the other reviews are pretty much saying the same thing that happened to me.
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Works just fine
By BobbieD on Nov 1, 2019
Was concerned with a preprogrammed heater but seems to be working just fine for my turtle. Would like to see one not made of glass though.
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Survived a potential disaster
By PBeau on Aug 4, 2019
I use this heater to keep my turtle's water near 78 degrees and it works well even though it is in the filter sump rather than the actual tank. The sump pumped itself dry when the outlet to the sump got clogged. I thought I had lost the heater only a week after buying it. Amazingly it STILL WORKS. It didn't break or burn up. Thanks for the high quality dependable design.
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Temp stays @ 78 degrees
By FarmMom on Apr 30, 2019
Very pleased with Thermostat. The temperature is staying at 78 degrees as stated it would. Like that it is submersible and I can do water changes without disconnecting the heater. 1st time my tank water is staying at the same temp without it being too high.or too low and constantly readjusting the thermostat!
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Worked 2 days
By STUPID on Jun 8, 2019
I am giving it a two only because it worked for two days. Then the lights started cycling and the water in my tank went down to 71 degrees.
