GloFish Submersible Fish Heater, 50-watts

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$17.47 (-22%) Chewy Price
$22.49 List Price
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About This Item

Details

  • Submersible heater keeps your aquarium at the optimal temperature.
  • Automatic thermostat keeps water at 78 degrees.
  • Indicator light shows when water is heating and when it’s at the right temperature.
  • Easy to use, includes a suction cup to attach the heater to the aquarium wall.
  • Ideal for aquariums up to 10 gallons.

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4.2
Rated 4.2 out of 5 stars
19 Ratings
Terms & Conditions

7 Customer Reviews

Rated 1 out of 5 stars
By Danielle on Apr 13, 2025

Kept going off.

I don't really trust these now, i'm a beginner i don't know if it's the brand.. But I ordered two, and they kept turning off no matter what outlet I used.. so I

I don't really trust these now, i'm a beginner i don't know if it's the brand.. But I ordered two, and they kept turning off no matter what outlet I used.. so I got a more expensive one, that's adjustable, and it hasn't failed me. I have a twenty gallon tank and all my fish are very happy.

Rated 5 out of 5 stars
By 5sd4 on May 30, 2025

Heater

Heater was perfect size for my 5 gallon tank.

Heater was perfect size for my 5 gallon tank.

Rated 5 out of 5 stars
By Fergie95 on Jan 10, 2025

price and size I needed

Good price.I bought 3 to go with the fish tank set ups for christmas Gifts

Good price.I bought 3 to go with the fish tank set ups for christmas Gifts

Rated 4 out of 5 stars
By cap on Jan 27, 2024

Decent

With a preset heater you should expect a +/- 5F of 78F. If you want stable temps you need an adjustable heater that you can adjust to YOUR homes atmosphere. I use

With a preset heater you should expect a +/- 5F of 78F. If you want stable temps you need an adjustable heater that you can adjust to YOUR homes atmosphere. I use these in my shrimp tanks in plastic tubs on the floor, usually keeps them 72F, no issues, usually last 1-2 yrs. The 50 watts seem to hold up longer.

Rated 5 out of 5 stars
By Heather on Mar 8, 2024

Perfect

Purchased 3 to use in my new biorb betta tanks. Seem to be keeping the temp at a consistent 75-78 degrees.

Purchased 3 to use in my new biorb betta tanks. Seem to be keeping the temp at a consistent 75-78 degrees.

Rated 1 out of 5 stars
By Fishies on Jul 6, 2023

Kinda disappointed

Haven’t had this long no longer works and sadly my 2 of my fish have passed away and I’ve found because the heater stopped working out of nowhere! I had put it up

Haven’t had this long no longer works and sadly my 2 of my fish have passed away and I’ve found because the heater stopped working out of nowhere! I had put it up how I was supposed to and no it just doesn’t work at all!

Rated 2 out of 5 stars
By Latori on Mar 21, 2023

Not so happy with

Good price but not even a week the ring holder broke I'm the water, now the stick part is just laying against the bowl and the rocks

Good price but not even a week the ring holder broke I'm the water, now the stick part is just laying against the bowl and the rocks