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DaToo Submersible 50W Aquarium Heater Adjustable Fish Tank Heater 50 Watt

Based on 543 reviews
Condition: New
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At a glance

Condition
New
Size
50Watt
Model
H-200
Weight
6.4 oz

Features 5

  • DaToo 50Watt Fish Tank Heater - A suitable temperature is very important for our beloved fish. No suitable temperature, our fish will not survive healthy. How to create this comfortable temperature? DaToo will help you. The DaToo Submersible Aquarium Heater is a system that create a warm and comfortable living environment for your lovely fish. Select DaToo Aquarium Heater, Let us care about your fish starting from the temperature.
  • Adjustable Temperature - Only need turn the knob on the top of the DaToo fish tank heater, You can easily get the temperature you want(68 to 93F) and you can read the temperature you set by the dial of the aquarium heater. Perfect Thermostat system to ensure that your beloved fish can be happy and comfortable life. Very Convenient !
  • Sturdy And Durable - Still worried about the heater will be broken?Now let's say goodbye to this worry. The shell of the DaToo Aquarium Heater is made with Shatterproof, Corrosion resistant, Wear-resistant microcrystalline glass(glass-ceramics), can be used in fresh water and salt water.The heating part is made of nickel-chromium alloy, ensure superior heat transfer and enhanced service life. Select DaToo Fish Tank Heater, Let it serve your fish forever.
  • BPA Free And Energy Saving - Every plastic component of the DaToo Fish Tank Heater is made with durable, high-quality, BPA-free plastic. The process of heating does not produce invisible toxins. This means it is safe not only for your fishes, but for you as well. Stepwise heating mode, it will automatically turn on and off to keep your set temperature, reduce electricity consumption. Select DaToo Aquarium Heater, not only care about your fish, but also save electricity fee for you.

Description

The Best Aquarium Heater 50W For Your Needs Product Features Power: 50Watt Size: 8.71.21.2inch Capacity: 5 to 15 gallons Suitable for fresh water and salt water Suction cups that are easy to place on any glass surface. Temperature in Fahrenheit ( 65°F to 93°F). NOTICE: 1. Please make sure that the heater is completely submerged in the water before turning on the power. (Very important) 2. Please make sure that the heater is completely submerged in the water when using it. (Very important) Why Do I Select 50 Watt DaToo Aquarium Heater? 1.Adjustable Temperature, easy to get the temperature you set. 2.Germany microcrystalline glass and nickel-chromium alloy heating wire, Sturdy And Durable, superior heat transfer and enhanced service life. 3.BPA- Free Material, this means it is safe not only for your fishes, but for you as well. 4.Stepwise heating mode, energy Saving, save electricity fee for you. Select DaToo Products= Own A Private Aquarium Housekeeper. JUST DO IT, Let’t Go!!

Specs 7

Package Dimensions 9 x 3 x 2 inches; 6.38 ounces
Item model number H-200
Manufacturer DaToo
Item Weight 6.4 ounces
Item Package Dimensions L x W x H 9 x 3 x 2 inches
Brand Name DaToo
Size 50Watt

Frequently asked questions

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View our full returns policy here.

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Top Amazon Reviews


Realiable
I have owned this heater 5 years, and it has performed great. It is in my 40 gallon tank, it is a good size, slim and not that noticeable.
Reviewed in the United States on April 22, 2026 by junk man

Great heater
This heater is still going strong after 2 years of use. I ordered about 2 years ago. It does need to be completely submerged in the water or it will wreck the heater. The dial is easy to set the temperature at. Very easy to use. I would definitely order again. It was a great price.
Reviewed in the United States on October 14, 2024 by Sarah J Johnson

Good cheap heater
Good cheap heater so far. I have 2, both in 5 gallon tanks, and both seem to maintain temp well. Make sure you have a good reliable thermometer to see your actual tank temp and dont trust the setting. Mine was set at what looked like 76 and my tank was 80 according to 2 thermometers
Reviewed in the United States on December 26, 2025 by Jake

Failed do not but
The tube leaked and shocked the tank.
Reviewed in the United States on April 25, 2022 by Robb Florida

Great Value Aquarium Heater
Having had too many aquarium heaters fail regardless of cost, I've opted for two smaller heaters per tank rather than one big one. When my older heater failed, I bought this as a replacement and it's worked great so far. Plusses: The suction cups are on a separate plastic holder and can be easily removed to adjust or clean without messing with the suction cups. Best price I could find anywhere. Minuses: The temperature gauge on the heater itself is off a little; backup temperature monitoring is a must. Steel body would have been better than glass, but I've never broken a glass heater. ... show more
Reviewed in the United States on March 10, 2022 by Jared E. Hayter

CRAP
Would not work at all for a week in the tank. I was shipped another one. I took the old one out of the water but still sitting in the tank and it started to melt it's plastic cover. The new one works when it wants, so I bought a different brand that works. Both of the non-working heaters have an indicator light. However you can't see it even if it did want to come on. Because the too loose of plastic sleeve covers it, and the heater will just twist around in there. I monitored all of this on a seperate digital aqua temp reader. I understand it was a cheaper item but I expected it to work. ... show more
Reviewed in the United States on January 15, 2023 by Tina Beaver

Lasted only a little while
Worked fine but has stopped working. Lasted only a few months.
Reviewed in the United States on May 12, 2026 by Ana

I think I found the one!
I’ve been searching for the perfect heater that will fit in my 5 gallon. I’ve gone through several and all of them aren’t fully submersible or they’re huge and have to be at an angle. This one is adjustable which is good because I live in Missouri and the weather never knows if it’s wants to be hot or cold. My favorite part is it’s size. It fits with more than enough space. Make sure that you unplug the heater before any water is taken out of the tank, and check temps of tank with a thermometer that doesn’t stay in your tank so that you know temp is stable. I’ve had it almost a month. Hopefully I’ll remember to update review after a few more months. ... show more
Reviewed in the United States on April 19, 2022 by Raeleenas
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