Aquarium Heater 300W/500W/800W/1000W for 20-300 Gal, Fish Tank Heater with Intelligent Leaving Water Automatica Stop Heating and Overheating Protection, for Freshwater & Saltwater
Original price was: $44.99.$39.99Current price is: $39.99.








Price: $44.99 - $39.99
(as of Oct 15, 2025 20:50:38 UTC – Details)
Product description
Keep Your Fish Safe From The Cold 
The inside of this aquarium heater is made of 2 explosion-proof quartz tubes and high temperature resistant nickel-chromium alloy heating wires, which has excellent thermal conductivity and is very safe and durable.
Safety Is One of The Core Values In Our Product Design

You can monitor the water temperature and set temperature in real time. Temp range: 63-94℉/17-34℃, Temp accuracy: ±1°F, long press for 5 seconds can convert the unit from ℉ to ℃. Red light is on when heating and green light is on when temperature is hold.

Automatic Constant Temperature Function: The heater will stop heating when the water temperature reach the setting and restart when the water temperature is lower than setting. Always provide the best living environment for our cute fishes.
Suitable for A Variety of Scenarios 
MantaMaze is committed to providing every user with the highest quality products and services
How to choose a suitable heater?
300 Watt: for 20-80 gallon tank
500 Watt: for 75-135 gallon tank
800 Watt: for 80-175 gallon tank
1000 Watt: for 120-300 gallon tank
What is after-sales service?
We provide up to one year after-sales time, if you have any questions, we will be responsible for the problem
Package Dimensions : 13.35 x 8.78 x 2.44 inches; 1.96 Pounds
Item model number : TY-201
Date First Available : May 7, 2024
Manufacturer : MantaMaze
ASIN : B0D3GFW5BH
Best Sellers Rank: #21,759 in Pet Supplies (See Top 100 in Pet Supplies) #47 in Aquarium Heaters
Customer Reviews: 4.5 4.5 out of 5 stars 161 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); } }); });
【Newly Upgraded Quality】Two super-tough heating tubes are made of explosion-proof quartz glass and high-temperature-resistant nickel-chrome heating wires, distributing heat evenly and heating water faster. The shell is made of V0-rated flame retardant plastic which is corrosion and heat-resistant and prevents fish from touching the heater, thus preventing them from getting burned.
【Multiple Security Protection】When the water temperature exceeds 94°F or the top of the submersible aquarium heater is 2 inches above the water surface, the heater will automatically cut off the power and stop heating, it will display an error code and sound an alarm until the water temperature is below 94°F or the submersible fish tank heater is completely submerged in the water.
【External Digital Controller】Adjust the temperature without putting your hand in the water. The LED controller can show the current water temperature, preset temperature, and more warning signs of High temperature/ out of the water. The running red light means the heater is heating, and the running green light means the water temperature has reached the set temperature.
【Precise Control Temperatur】Temperature adjustable range: 63-94℉, hold the “+” and “-” for 5 seconds to switch between ℉ and ℃. Accuracy: ±1°F, the adjustable aquarium heater will stop heating when the temperature reaches the setting and restart when it is lower than the setting. The memory function can automatically retain the previous setting when the adjustable fish tank heater is restarted.
【Wide Range of Applications】300W aquarium heater for 20-80 gallon tanks, please select the appropriate wattage according to our parameters. This fish tank water heater can be widely used in freshwater and saltwater fish tanks, turtle tanks, and aquariums. You can easily mount the aquarium water heater to the tank wall using the included suction cups to maintain the decoration style of your tank.
Customers say
Customers find the aquarium heater works well, particularly on 15-gallon tanks, and appreciate its temperature control features, with one noting a 2-degree temperature swing capability. Moreover, the heater is easy to install and operate, and customers consider it good value for money. They like its size, with one mentioning it’s perfect for a 300-gallon aquaponic container.
8 reviews for Aquarium Heater 300W/500W/800W/1000W for 20-300 Gal, Fish Tank Heater with Intelligent Leaving Water Automatica Stop Heating and Overheating Protection, for Freshwater & Saltwater
Add a review
Original price was: $44.99.$39.99Current price is: $39.99.
J3 –
Would absolutely buy again! 🙂
Very pleased with this product. This heater has done a great job of maintaining the temperature in my 125 gallon marineland fish tank. My fish are happy, healthy, and are thriving with amazing color. Iâd highly recommend it, great value, great size as itâs not too bulky, and it has been working well with no issues. Iâd 110% buy again.
Donna –
This is a great heater
This is the second one of these heaters I have purchased and I really do like them. They work well on my 15 gallon tanks. I did have one that went defective after about a month but they replaced it and sent me a brand new one so it worked great too. I highly recommend this heater for a tank within the size of 15 to 25 or 30 gallons the most, and I really love the fact that it has a preset temperature and you can see the temperature.
David Barbosa –
Reasonable price
Easy to use and keeps the temperature steady.
Scott –
Works great and a must for large water changes.
I’ve had this for around 3 months so far and I love it. The best feature is the large temperature display. Now I know what temperature my water is when filling the tank during a water change. I use it in my 210 gallon and it’s never had an issue keeping the tank at 78.
Dudley Eppes –
Set at 76 heats to 78.6 before temp drops back to 76.
Seems mine is playing fast and loose with temp range. Set it back to 75 to see how hot it gets before stopping. I like the out of water control the large easy to read display and price is good. This may be ok with a 2 degree temp swing.
AlienAnchovies –
This thing is amazing!
Best heater I’ve ever owned!
DeVonte Thomas –
Beware of the controller failing
Really disappointed in this heater. A couple weeks after owning it I noticed it randomly was set 6 degrees higher than where I manually set it. Not a huge deal as I thought I mustâve accidentally bumped it. Fast forward and not only did it happen again it drove up to the max temp causing my turtle pond to reach over 90 degrees. No matter what I do to try to change the temp it defaults back to 90 degrees then alarms. I left the controller in a locked safety box so I know it wasnât manually changed. Thankfully my turtle was okay, but I would recommend being a bit skeptical of this one.
Informed Customer –
Great choice!
Best thermometer ever! I highly recommend.