Tetra HT Submersible Heater 100 Watts, For 10 to 30 Gallon Aquariums, UL Listed
Tetra HT Submersible Heater 100 Watts, For 10 to 30 Gallon Aquariums, UL Listed
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Tetra HT Submersible Heater 100 Watts, For 10 to 30 Gallon Aquariums, UL Listed

242 ratings
Tetra HT Submersible Heater 100 Watts, For 10 to 30 Gallon Aquariums, UL ListedTetra HT Submersible Heater 100 Watts For 10 to 30 Gallon Aquariums UL ListedTetra HT Submersible Aquarium Heater 50 W 2 10 galTetra HT Submersible Heater 200 Watts For Aquariums 40 To 55 Gallons UL Listed
Size100-watt (10 -30 Gal)

Key item features

  • AQUARIUM HEATER: Submersible heater is designed to keep your aquarium at the optimum temperature.
  • AUTOMATIC THERMOSTAT: Electronic thermostat keeps water at a consistent 78 degrees.
  • INDICATOR LIGHT: The red light shows when water is heating; green indicates that the heater is on standby.

About this item

Product details

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Customer ratings & reviews

3.8 out of 5 stars
stars
242 ratings157 reviews
How item rating is calculated
  1. 5 stars60% (144)
  2. 4 stars10% (23)
  3. 3 stars5% (11)
  4. 2 stars4% (9)
  5. 1 star23% (55)

Reviews summary

Pros

  • : The heater keeps aquarium temperatures stable at a low cost.
  • : Quickly suctions to the side for setup.
  • : The heater fits and warms 2-10 gallon aquariums.

Cons

  • : The led stays green or flickers and fails to show heat.
  • : The unit fails to warm a 5-gallon tank.
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Showing 1-3 of 157 reviews

Dec 15, 2025
Reviewer name: Walmart customer
Item details
Size: 200-watt (40-55 Gal)
Sold byMirwood LLCDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

The perfect heater.

The fish tank heater is easy to install and it heats the tank to the temperature needed. The price was very affordable.. My turtles are enjoying the heat.

Helpful?2JKJONHFDBL312177657
Feb 20, 2013
Reviewer name: Kaj4711
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great heater for small tank.

I bought this heater for my daughters new betta fish 2 gallon tank. I love the fact that it suctioned on the side of the tank & also has an auto shut off when it reaches correct temp. He dif. seems to like it being warm.

Helpful?2JKJONHFDBL312177657
Jun 25, 2026
Reviewer name: Tjc
Item details
Size: 200-watt (40-55 Gal)
Sold byMirwood LLCDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Very good aquarium heater

Helpful?2JKJONHFDBL312177657
Current price is $23.92
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