Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt

By Tetra
Rated 3.2857 out of 5 stars
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About This Item

Details

  • Submersible heater that can be installed vertically or horizontally.
  • Low voltage thermostat maintains water at 78°F.
  • Features red/green indicator lights to show when the heater is heating or on standby.
  • For use with 2-10-gallon aquariums.
  • Easy to conceal behind plants or other décor.

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Customer Rating
Rated 3.2857 out of 5 stars
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Aquarium TypeSaltwater, FreshwaterFreshwaterSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, Freshwater
MaterialPlastic—PlasticPlasticPlastic
Fish Type—Betta, Goldfish, Marine Fish...Betta, Cichlid, Goldfish, Marine Fish, Tropical Freshwater—Betta, Cichlid, Goldfish, Marine Fish, Tropical Freshwater

Questions & Answers

Terms & Conditions

8 Customer Questions

Once water is up to temp and light is green, do I need to unplug the heater?
Answer by Chewy • Nov 17, 2020
Once the water is up to temperature, it does not need to be unplugged as the heater will maintain the water at 78°F.
Does thermostat stay red or later green
Answer by Chewy • Apr 05, 2020
The indicator light lets you know when the water is being heated (red light) and when it is at the proper temperature (green light).
Does this run on power cord
Answer by Chewy • Dec 11, 2019
This item uses a power cord.
Can this be used in a plastic tank?
Answer by Chewy • Nov 12, 2021
This thermostat can be used in a plastic tank as long as the tank is the proper size for it, it is fully submerged at all times, vertical and not touching the gravel or décor.

ReviewsWrite a Review

3.3
Rated 3.2857 out of 5 stars
56 Ratings
68%
Would recommend to a friend
1
30.3571
30%
2
7.1429
7%
3
12.5
13%
4
3.5714
4%
5
46.4286
46%
Terms & Conditions

56 Customer Reviews

Rated 5 out of 5 stars
By Wyrm on Sep 7, 2023

Got this for a 5-gallon tank, it's working perfect!

It maintains the temperature perfectly for my betta.

Rated 5 out of 5 stars
By GH2023 on Mar 11, 2023
Top 1000 Contibutor

Keeps 5.5 Gallon Betta Tank At A Steady 78 F

Not sure why there are so many bad reviews. I have been running this for well over 6 weeks with no issues whatsoever. Temp stays a steady 78 degrees. I have it mounted horizontally at the bottom of the tank, centered on the back wall. Betta is very happy. I just ordered a back up to have on hand.

Rated 1 out of 5 stars
By Oskar on Feb 24, 2023

Short Lived

This heater was problematic from the start as the short length makes it easy to cover the indicator light by the suction cup band. For a while it kept the water in a 10 gallon tank at 78 degrees. Less than a year into use the water gets no warmer than 72 and only the red light comes on anymore. Not worth the economic price and I need to purchase a different 50 watt heater now.

Rated 2 out of 5 stars
By TylerS on Apr 11, 2023

Not keeping the temp high enough

This is keeping the water somewhere between 70-72 degrees. It's clear that it's on and "working", but the thermometer in my tank shows it's just not getting warm enough.

Rated 5 out of 5 stars
By Kimlem on Dec 14, 2022

Good value

Love this. Works great in my 10 gallon. Nice and compact

Rated 1 out of 5 stars
By roonie on Sep 2, 2022

worst heater EVER

Had this heater for less than a week for my aquatic turtle and stopped working!!!! I would not recommend this item to anyone!!!!

Rated 4 out of 5 stars
By Ivie on Feb 27, 2022

Pretty good

I have this in a 5 gallon tank and it seems to be working so far. I've only had it in there for a couple days but it has warmed the water up to be around 76° F. It's not adjustable so if you need warmer water than that I'd look elsewhere. It works for my purposes though, my tank is in a cold basement so the water was like 60° F before, all I needed was to keep the water a little warmer for my betta and it seems to be doing that job so far.

Rated 2 out of 5 stars
By Beth on Apr 7, 2022

Not for tropical fish

With my apartment at 70 degrees, this heater keeps the water in my 10 gallon tank around 60 degrees. Not quite warm enough for tropical freshwater fish.

Rated 1 out of 5 stars
By TomF on Mar 3, 2022

Sad by results

I was disappointed with the Tetra heaters that i recently purchased. They said that they would automatically adjust the water to 78°. One maxed out at 74° and the other at 76°.

Rated 3 out of 5 stars
By Starr on Dec 20, 2021

This things alright.

It’s alright for a small tank that the water doesn’t matter is it fluctuates a little bit between 70-78 sometimes the thing kicks off for a bit and will start back up. Which for my case is perfectly fine.