MQ Titanium Alloy 500W Aquarium Heater for Salt and Fresh Water, Digital LED Display Submersible Heater with External Thermostat Controller, for Fish Tank 70-80 Gallon
Original price was: $26.99.$24.99Current price is: $24.99.
Price: $26.99 - $24.99
(as of Oct 15, 2025 07:58:50 UTC – Details)
From the brand
MQ was established in 2013 and popular in Europe and America, chosen by millions of households. We are striving to provide top quality products with the best prices.
LED Aquarium Light
Submersible Aquarium
Aquarium Heater
Submersible Water Pump
MQ Fish & Aquatic Supplies
Aquarium Water Pump
Aquarium Heater
Reptile Terrarium Heat Pad
Is Discontinued By Manufacturer : No
Product Dimensions : 14.96 x 0.91 x 0.91 inches; 13.76 ounces
Date First Available : April 27, 2019
Manufacturer : MQ
ASIN : B07R6KK53C
Best Sellers Rank: #32,546 in Pet Supplies (See Top 100 in Pet Supplies) #83 in Aquarium Heaters
Customer Reviews: 3.9 3.9 out of 5 stars 1,003 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Durable Titanium Tube – This aquarium heater is made of premium Titanium Alloy, double seal material, advanced design to ensure safe operation. It has explosion-proof function while being also shatterproof and waterproof.
Wide Temperature Range – The temperature of the heater can be adjusted between 20-34℃, 68-93F. It is suitable for many kinds of aquariums, fishes and amphibious turtles.
Easy Viewing and Safe Adjusting – It is easy and safe to adjust temperature by the external controller and the temperature will be shown on the LED screen of the heater.
Intelligent Temperature Control – It can ensure the temperature constant at the set point as it can adjust heating power automatically if there is any water temperature variation. So that it can avoid temperature mutation and protect fishes.
It will stop heating when the water temp reaches to the set temp, restart heating when the water temp is 1℉ less than the set temp. The heater is working when the indicator light is red.
Customers say
Customers find the aquarium heater offers good value for money. However, the functionality and temperature control receive mixed reviews – while some say it works well, others report it stops working after a day and shows false readings. Moreover, durability is a concern as units fail within months, and the E1 error code appears frequently. The heating ability also draws mixed reactions, with some saying it works well while others report their fish being cooked overnight.
13 reviews for MQ Titanium Alloy 500W Aquarium Heater for Salt and Fresh Water, Digital LED Display Submersible Heater with External Thermostat Controller, for Fish Tank 70-80 Gallon
Add a review
Related Products
Original price was: $26.99.$24.99Current price is: $24.99.
Lucette Tsen Liu –
Defective and disappointing
WHAT A WASTE OF MONEY ð¤¦I gave it five stars because I needed to warn people products that don’t work or work but don’t last, we bought this after I read every positive and negative review I figured I’d give it a chance and it worked perfectly until a month ago the date today is July 14th 2025 to give you a perspective, at the present moment it won’t stop flashing and it doesn’t stay warm, it’s on and I can hold it in my hand underneath the water, so now back to searching for a submersible heater for my turtle tank, buy at your own risk.
Ashley –
29 gallon tank
Bought this aquarium heater for my 29 gallon tank. Filled with hose water and the heater read it was 60 degrees F. Overnight, the tank reached 76 (I have it set for 77). I think it went up to 90 degrees, then shot back down to 60 something. Easy to install. Hasnât moved from where I placed it, even after re-wiring everything and moving stuff inside around.October 28, 2024 – Reaching out to the seller because my heater states itâs at 80 but itâs actually between 76-77. I had it running for hours and Iâve been checking temperature all day. Nothing has changed in my tank. Requesting a new one or buying a whole new heater from somewhere else.
Nick Nall –
Do not buy this unless you like being shocked
If I could give this half a star I would I got shocked by this heater I maybe used it for 5 months bought it over 7 months ago I wouldnât recommend it to anyone at first it was doing the job great worked well in my sump but I went downstairs today to put nori in my tank like I do most days and got electrocuted multiple times before I found out the culprit I unplugged my wave makers and heater didnât even have to unplug my sump pump because I tested the heater 3 times which involved me getting shocked some more and it was the heater if I were anyone buy something else because this product is garbage and itâs well past the date I can return it so I just went and bought a new heater from the local fish store
bbenn –
Bought 3 500W, 02/2021, 2023 and the last 12/2024, finally read the manual. E1-4 see below
Here are some codes I found that likely apply but I have only seen the current temp, the target temp and E1. blue led means not heating, red led means heating is on:LL No.1 temperature sensor faultHH No.2 temperature sensor faultE1 The heater is not submersedE2 The heater is placed somewhere with bad water circulation-Components faultE3 The heater is placed somewhere with bad water circulation-Components faultE4 Flat power grid interferencecouldn’t find anything on E8 seen in another commentI’ve bought three of these 500W. The first two were branded vivosun. the last MQ.The first lasted 3 years then just stopped heating, no errors, still reads temp only. The second, less than one year old is working fine. Bought a 3rd for winter backup this month. It shows 3 degrees hotter than actual. I was used to dumb heaters so when E1 showed up I didn’t understand it. Turns out there’s a sensor at the top and these units require complete submersion.My biggest issue was I was too lazy to read the manual and didn’t understand the E1 code. I experienced this, make sure to tap bubbles out of holes if E1 persists.E2 means it senses an overheat condition > 96F. I believe usually caused by poor water circulation, or stuck on. I haven’t experienced this, but I see at least one in the comments that has.E3/E4 seems to mean component failure or water ingress.
Daniela G –
Long lasting, easy to use, best value for your money,
I bought this a year ago for 2 of my oscars in a 55 theyâre fully grown now and Iâm building a indoor pond for them, I bought this heater a year ago and I still have it and it still works perfectly fine and keeps the water at the temperature you want it to be, warms up from 60° to 84° in about 40 minutes, I just bought another not because the one I bought broke but because the pond Iâm building will need 2 this is a good product long lasting best value for your money sleek light weight easy to use
The Genral –
Easy to setup
I placed the heater near my wave maker in my 75 gallon tank. The starting water temperature was 72 degrees. It only took a couple of hours to reach the 76 degrees I set on the heater. I really like the temperature read out on the heater itself. It’s lit up and easy to read. There’s a red light that indicates the heater is on, and a blue light when the water temperature reaches the desired setting. Overall, this heater which is titanium and not glass or plastic seems to be very sturdy and well built.
Gracie Pina –
Aquarium Heater
Aquarium Heaters are essential for tropical fish and keeping water temp level and comfortable for your petsI’m on my 3rd aquarium heater. Different brands have an option you like. My favorite options are being able to see the actual temp via LED visual. The right size for however many gallons of aquarium water you have. Space saving room size to give aquarium space preference for aquatic pets is favorable.. How long will an aquarium heater last? Good question? In my 3 year hobby, I’ve gone through 3 heaters for different reasons.. hope this commentary helps you with your love of fish pets… Gracie…
Philip I. –
pre 2023-great. since 2024, any that look exactly like this & avail from a number of brands are junk
stopped working in less than 8 months of use… The market seems saturated with these since 2023 and prior they lasted 3-4 years and have some still working purchased in 2020… I seem to be buying and replacing any bought in 2024 again and again while the ones purchased in 2023 and earlier are still around and kicking… Frustratingly ridiculous
Ann –
The digital display is so easy to see. The best part is being able to change the temperature setting without going inside the tank. The heater is working just great in my 90 gallon tank. Obviously I have been using a very old heater.
nicholas –
The heater lasted 6 months before malfunction and heating the tank to 40C nearly killing all my fish!
dylan gomes –
Absolutely terrible… started to go crazy 2 mins after I put it in the water. It would turn the heat off an on rapidly and show temperatures from 70 to 84 within seconds.. woke up the next day and the display was blank. Waste of money
Elijah –
better becuase they are new products
Van Nguyen –
Save money and good work