Marina Betta Submersible Aquarium Heater

By Marina
Rated 4.0893 out of 5 stars
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$11.26Chewy Price
List:
$17.99Chewy Price
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$6.73
(37%)

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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, CichlidN/A, Marine Invertebrate, Tropical Freshwater...Tropical Freshwater, Betta, Cichlid, Goldfish, Marine FishBetta
Aquarium TypeFreshwaterFreshwaterFreshwaterFreshwater, SaltwaterFreshwater, Saltwater
MaterialPlasticPlasticN/APlasticPlastic

Questions & Answers

14 Customer Questions


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,

is it fully submersible?
Answer by ChewyNov 22, 2018
The Marina Betta Submersible Aquarium Heater is fully submersible.


ReviewsWrite a Review

4.1
Rated 4.0893 out of 5 stars
56 Reviews
86%
Would recommend to a friend
1
12.5
13%
2
5.3571
5%
3
8.9286
9%
4
7.1429
7%
5
66.0714
66%

56 Customer Reviews



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.


Rated 3 out of 5 stars
By Mike on Oct 5, 2020

Does it's job, but requires attention.. (no thermostat inside)

I bought this particular heater with the expectation that it would have regulated itself to a temperature. I thought I had read that it would take a 1 gallon aquarium to roughly 78*F, but I must have misread that or just imagined that I saw it! It's funny that at this price point which is of course on the low-end, there doesn't seem to be a manufacturer who incorporates a thermostat function built into the heater and just sell it at whatever higher price would be necessary because people would buy it. Instead, apparently in addition to this heater you need to buy a controller that will keep an eye on the temperature and just turn this on when it falls below that threshold. For a simple betta tank it is annoying to have that much hardware, so I am personally keeping an eye on the tank temperature and for the winter will run this heater when the ambient in room is ~68*F, and in the summer/warmer days will just unplug the heater when the room gets into the mid 70s.


Rated 5 out of 5 stars
By Rebecca on Oct 22, 2020

Great for small aquariums.

I have a 2 gal. aquarium for my beta that has live plants. This heater is excellent. Other heaters were hard to regulate and kept spiking temp. This maintains the perfect temp consistently. Love it and so does my fish.