Marina Betta Submersible Aquarium Heater

By Marina
Rated 4.0517 out of 5 stars
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Marina Betta Submersible Aquarium Heater slide 1 of 3
$12.52Chewy Price
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$17.99Chewy Price
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About This Item

  • 8-watt, submersible heater helps create the ideal water conditions in bowls or tanks up to 1.5 gallons.
  • Designed to automatically reach and maintain a set temperature–no manual adjustments needed.
  • It’s made of durable polymer, so it’s more resilient than traditional glass sleeve heaters.
  • Red indicator light illuminates to let you know the heater is working.
  • The included suction cup allows you to easily install it inside your aquarium.
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Fish TypeBettaBetta, Tropical Freshwater, Goldfish, CichlidTropical Freshwater, Betta, Cichlid, Goldfish, Marine FishN/A, Marine Invertebrate, Tropical Freshwater...Betta
Aquarium TypeFreshwaterFreshwaterFreshwater, SaltwaterFreshwaterFreshwater, Saltwater
MaterialPlasticPlasticPlasticPlastic

Questions & Answers

15 Customer Questions


I'd like to use this in a water bowl for my senior cat who prefers warm water. Will this work and also what are the dimensions please?

Is this heater compatible with a .7 gal plastic tank? (I think it's plastic)
Answer by ChewyOct 17, 2017
This heater is designed to heat tanks up to 1.5 gallons and is compatible with plastic tanks.

Is the Heater Perfect To Heat Up A Small Bowl For A Baby Betta.
Answer by ChewyOct 25, 2018
This 8-watt, submersible heater helps create the ideal water conditions for your betta to thrive in bowls and tanks up to 1.5 gallons.

The red indicator light stays on all the time?
Answer by ChewyNov 08, 2017
Once plugged in, the heater stays on and the red light indicates it's working,


ReviewsWrite a Review

4.1
Rated 4.0517 out of 5 stars
58 Reviews
84%
Would recommend to a friend
1
13.7931
14%
2
5.1724
5%
3
8.6207
9%
4
6.8966
7%
5
65.5172
66%

58 Customer Reviews



Rated 5 out of 5 stars
By jmpi on Sep 30, 2022

Works well

We have only had this a couple weeks but it is doing exactly what it is supposed to do Our small glass aquarium is staying at about seventy eight degrees and our betta loves it


Rated 1 out of 5 stars
By poor on Jan 24, 2022

ok at first then got too hot

It worked for a couple weeks just fine for our 1 gallon tank keeping it at around 76 degrees but all the sudden the temperature has jumped up to 84. I am lucky my fish is still alive but this was disappointing.


Rated 1 out of 5 stars
By Krisblack on Sep 9, 2021

Ordered a fish tank heater got a invisible pet collar

Well i'd love to review the heater i ordered but i got a pet safe collar for outside paly instead... not sure how this happened but now my beta fish is still cold but he can go outside safely...


Rated 5 out of 5 stars
By LisaStew on Oct 4, 2021

Works great!

Warmed my beta’s bowl up from 65-80 degrees in a couple of days. He’s a happy fish now!


Rated 5 out of 5 stars
By Perfect on Oct 16, 2021

Small Betta tank

We use this in a 1/2 gallon vase type aquarium. It works perfectly!!


Rated 5 out of 5 stars
By Becca on Jan 7, 2021

Works for me!

I was hesitant about the purchase since I had read mixed reviews, but the little heater has worked great for my 1-gal. glass bowl. It keeps the water at a perfect 78 degrees. The only time the water got too warm was when I had a hard plastic covering over the top of the bowl. I removed it and everything was fine!


Rated 3 out of 5 stars
By MissLu on Jan 12, 2021

Beta water warmer

It warms but only on the side it’s placed on I feel it’s best to spend a little more for a better heater. My fish literally hangs by the heater an no where else.


Rated 5 out of 5 stars
By Myra on Feb 2, 2021

Love it if I need it Will purchase it again

Amazing love it so much I ordered one for my mom and she is so happy her fish it’s nice and warm


Rated 1 out of 5 stars
By Fish on Dec 31, 2020

Worked marginally then overheated and killed our fish

We had this heater for about a week. This heater worked marginally to keep our 1.5 gal tank at 76 degrees. Last night it overheated and we woke up to a dead fish and hot water. Kids are really sad!


Rated 1 out of 5 stars
By Littlebear on Nov 5, 2020

Not what I expected

This product says it will heat a small fish bowl but doesn’t met any standards. Was not able to heat a very small fish bowl for a beta fish. Had a small light on it showing it was on but never heated at all. Not worth the money I spent . Useless and had to buy something else.