Aquatop Submersible Glass Aquarium Heater

By Aquatop
Rated 3.6829 out of 5 stars
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Aquatop Submersible Glass Aquarium Heater, 200-watt slide 1 of 3
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$26.99Chewy Price
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Customer Rating
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Fish TypeTropical Freshwater, Marine FishTropical Freshwater, Marine FishTropical Freshwater, Betta, Cichlid, Goldfish, Marine FishTropical FreshwaterTropical Freshwater
Aquarium TypeFreshwater, SaltwaterFreshwaterFreshwater, SaltwaterFreshwaterFreshwater
MaterialGlassPolypropylene, PlasticPlasticPlasticPlastic

About This Item

  • Glass aquarium heater is perfect for freshwater or marine aquariums.
  • Easy temperature adjustments with the simple turn of a knob.
  • At-a-glance temperature monitoring with highly-visible temperature display.
  • Fully-submersible design is easy to install with included suction cups and slim profile.
  • Double insulation glass design with over-wind protection makes it ideal for everyday use.

Questions & Answers

21 Customer Questions

Is it FULLY submersible. Got mine and instructions show the top with temp nob above water line
Answer by ChewySep 21, 2018
It's recommended to place this heater at the upper half of the glass heating unit. Make sure that the water line is not lower than the bottom of the temperature setting display as this will expose the heating element to air and can cause the heater to fail.

Can the 50 watt heater be used in a 3 gallon aquarium or is it too many watts?
Answer by ChewyOct 14, 2018
This heater may be used for a 3 gallon aquarium but the temperature should be monitored. It's recommended to set between 76-82 degrees Fahrenheit.

What are the dimensions?
Answer by ChewyJun 11, 2018
All sizes have a diameter of 1.25 inches. The 50 and 75 watts are 8.5 inches tall, the 100 and 150 watts are 10 inches tall, the 200 and 250 watts are 12 inches tall and the 300 watt is 14 inches.

How many gallons will the 300 wAtt keep warm?
Answer by ChewyOct 29, 2019
The 300 watt heater will keep up to 75 gallons of water warm.

ReviewsWrite a Review

Rated 3.6829 out of 5 stars
82 Reviews
Would recommend to a friend

82 Customer Reviews

Rated 3 out of 5 stars
By Bone on Jan 4, 2022

Aqua top heater

I have had my Aqua top heater for about 2 years it’s okay for the price. But it is a affordable heater. If you want a top heater they cost about 40.00 bucks Ebo jager are fluval

Rated 2 out of 5 stars
By Molly on Nov 18, 2021

hardly worth the price—even on sale

I paid ~$17 for a 250 watt, which was a great deal. Too great, I have come to find out. Today I discovered my heater unusable, after only a few short months that I spent constantly fighting to get it to work properly, so it was a relief to finally toss it where it belongs: the trash!

Rated 5 out of 5 stars
By Missy on Oct 22, 2021

250 watt for 75G

This is very fragile and glass was shattered when arrived. Chewy was able to replace my order. 250 Watt Works fine with my 75G and I put it at 79F for my Ranchus. Keep in mind to turn it off before you do water changes because it will crack if not submerged.

Rated 5 out of 5 stars
By Kitties on Nov 10, 2021

Works perfectly

Reicieved in may it is now November works great in my 40 gallon tank. Mine is fully under water no issues at all. I'm now buying a new one for the new tank full of babies.

Rated 1 out of 5 stars
By Whyineedanickname on Oct 24, 2021

Junk Heater

Junk! Doesn't work right. Shows light is on but yet not producing heat. Never again. Would like a refund

Rated 1 out of 5 stars
By Serg on Jan 4, 2022

Boom explosion

It explodes in my tank about 2 months after buying it

Rated 1 out of 5 stars
By ashnickole on Jun 21, 2021


Had set to 75 degrees for my 29 gallon tank and it malfunctioned, didnt turn off at 75 degrees kept heating the tank. Lost half of my fish caught it before all fried and was able to save some by draining half water and adding colder water...

Rated 2 out of 5 stars
By Cristian on Jun 21, 2021

don’t recommend for long term

I’ve had this for around 2-3 months and it finally broke, I used it for my goldfish tank to keep a stable temp, and then it started going above the temp or it wouldn’t move at all overall I rate this a 2.5/5 because of the looks.

Rated 5 out of 5 stars
By Joeii on Apr 22, 2021

Great Heater

I received this next day. Thank you Chewy. I like it. Most heaters are preset these days. This will go up to 100. I keep it at 82 to kill ick! I've only had it a day but it's a sleek design, glass feels fancy. And the best thing is it came with TWO suction cups.

Rated 5 out of 5 stars
By Pinky84 on Aug 25, 2021

Aquarium Heater

Does what it is expected to do, and works well with my aquarium size