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hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank, Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta, Turtle

4.2 4.2 out of 5 stars 2,260 ratings

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50W (1-6.5 gallon)

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About this item

  • 🐠【Compact Small Heater】110-120V/60HZ oval shape design little aquarium heater, fast heating for small fish tank. 50W tank heater is for 1-6.5gallon, 100W tank heater is for 6.5-13 gallon. Heater Dimension: 2.7x1.4x 4.5 inch. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater, it's easy to install it on to glass, acrylic or plastic tank
  • 🐠【External Controller】easy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63℉ to 94℉, temp accuracy 1℉. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done. Keep the controller away from water, it's not waterproof
  • 🐠【Digital Display】with led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. The led will display the set temp digit only when you press the controller
  • 🐠【Reliable Thermostat】this an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. The tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1℉ off the set temp. If the water temp is over 95℉, the heater will auto shut off and led displaying HH, it will work normally again when the water temp is lower than 95℉
  • 🐠【Shut off When Out of Water】please note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying E1, when fully in water again it will return to normal work again

Customer ratings by feature

Easy to use
4.7 4.7
Easy to read
4.7 4.7
Value for money
4.1 4.1
Suction power
3.8 3.8

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Product Description

Hygger oval shape aquarium heater is specially designed for small tank 1-13 gallon use, fast heating and keep stable water temperature for bettas and turtles.

This is a fully automatic digital aquarium thermostat, very reliable and easy to use.

Perfect water temperature for betta: 75-81℉.

Perfect water temperature for turtle: 77-86℉.

betta heater
turtle heater

Hygger Betta Heater Features

  • Compact and small shape, with plastic guard.
  • It has memory function if power failure happens.
  • With 2 strong suction cups, can be replaced.
  • External temp controller, easy to set the temp.
  • Built-in thermometer, is sensitive in water.
  • Led digital display, show water temp.
  • Auto shut off when out of water, safe to use.
  • Auto stop heating when water temp is higher than 95℉.

This adjustable aquarium heater can be used for almost all kinds of small fish tanks, such as square, cylinder shaped or bowl tank, tank made of glass, acrylic or plastic.

Specification:

  • Voltage: 110-120V/60HZ
  • Heater tube material: quartz glass
  • Plug: two-pin US plug
  • Power cord length: heater to plug is 5ft, controller to plug is 12 inch
  • Heater dimension: 2.7x1.4x 4.5 inch
5 gallon aquarium heater

For freshwater or saltwater aquariums

This aquarium submersible heater with quartz glass heater tube, durable for use in freshwater and saltwater.

The heater plastic guard with gaps, the width is about 6-7mm, no fish can go in, so no worries for fish stuck or burned. Can protect your small turles and fish from burned.

A compact black fish tank heater, easy to be hide in tank. With 2 strong suction cups on the backside, the heater will firmly stick on to the tank, no turtles or fish can push the heater out of water.

auquarium 50W heater

How to use the temperature setting?

  1. After you place the heater fully in water, wait for about 10 seconds, the led then will display the accurate water temp. Then you can start to set the temp.
  2. Press the set button on the controller over and over, the led digits will go circularly from 63 to 94, when you get the digit you want, stop and wait the led flashing for 3 times, then the setting is done.
  3. After temp setting and during the heating time, the led displays the water temp.
  4. Only show farenheit temp.

When does the heater stop heating and restart heating?

When the water temp reaches to the set temp, it stops heating, at this moment the water temp may go up 1 more farenheit degree if the tank is smaller than 10 gallon.

The tank heater will restart heating when water temp is 1℉ off the set temp.

Indicator light on the heater: on red means heating, light off means stop heating.

100W aquarium heater

fish tank heater

10 gallon aquarium heater

Auto Shut Off When Out of Water

  • When the heater top is out of water, it will stop heating, the led displaying E1, it means you should put the heater fully submerged.
  • It will work normally again when the heater is fully in water again, it has memory function, no need extra setting.

Over Heating Protection

  • When the water temp is higher than 95℉, the turtle heater will stop heating and the set button is failure, you can't do any setting on the controller, led displaying HH.
  • In this case, just wait the water temp going down. The small fish tank heater will work normally again when the water temp is lower than 95℉.

Use Directions

  1. Keep the heater fully submerged in water.
  2. Don’t bury the heater under substrates such as gravels or sands.
  3. Keep the external temp controller away form water.
  4. Don’t take the heater out of water directly when it’s heating.
  5. Keep water circulation as far as possible.

Product details

  • Product Dimensions ‏ : ‎ 2.76 x 1.38 x 4.53 inches; 9.91 ounces
  • Item model number ‏ : ‎ HG-916-50W
  • Date First Available ‏ : ‎ August 29, 2019
  • Manufacturer ‏ : ‎ hygger
  • ASIN ‏ : ‎ B07X45XC3Z
  • Customer Reviews:
    4.2 4.2 out of 5 stars 2,260 ratings

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Customer reviews

4.2 out of 5 stars
4.2 out of 5
2,260 global ratings

Customers say

Customers like the ease of setup of the thermometer. They mention that the settings are easy to set and understandable, but the instructions are not immediate. They are also happy with readability. However, some customers report that the thermomer makes a loud noise when it comes on. They also dislike the suction cups. Opinions are mixed on quality, accuracy, size, and display.

AI-generated from the text of customer reviews

48 customers mention48 positive0 negative

Customers find the thermometer easy to set and use. They mention that the controls are easy to use and the suction cups on the back make it easy to place the thermos in their tank. Customers also say that the instructions are understandable but not immediate.

"...The heater was easy to use, easy to install. Sticks great. Only thing thats a pain is that you cant click down a temp...." Read more

"...Being so easy to adjust (with the button on the cord) makes it extremely easy to raise or lower the temperature precisely and at whatever speed you..." Read more

"...This has digital temperature control which makes it easy to adjust as needed. This is helpful if your power goes out a lot like mine...." Read more

"...Love seeing the temperature display. Easy to set the temperature and for the most part its vary accurate...." Read more

30 customers mention30 positive0 negative

Customers find the thermometer easy to read and set. They say the display is easy to see and set the temperature without getting wet. Customers also say it's simple and effective, with a good digital reading.

"...It performed just fine at first for awhile and the display made it easy to read, but we went away for Thanksgiving weekend and when I returned......." Read more

"...The numbers are nice and big so they're easy to read, even though I have the heater hidden behind a piece of driftwood so it won't detract from the..." Read more

"...Pros:-Compact. Good size for a smaller tank.-Easy to read and set...." Read more

"...this one works now and i think it has a more accurate reading than my cheap thermostat!..." Read more

292 customers mention167 positive125 negative

Customers are mixed about the quality of thermometer. Some mention that it works well for 8 months, is reliable, and has no issues for months, while others say that it only lasted just over a year and stopped working.

"Put this in my fish tank and it worked great...." Read more

"...Still working, but now when it heats up to temp...it makes a noise... Cracking..knocking..til it reaches temp. It's quite loud...see video..." Read more

"...the temp up over the course of a few hours is exceptionally useful for acclimating new fish, and is a very nice feature in a heater of this price...." Read more

"Works well but expect the thermostat to go 2 degrees +/- so you have to reset every few days" Read more

227 customers mention111 positive116 negative

Customers are mixed about the accuracy of the thermometer. Some mention that the temperature is accurate, the design is compact and sleek, and it guards the water. However, others say that it never heats, the temperature remains stable as long as it was under 77, and the constant digital temperature display makes caring for pets a lot easier.

"...(quite slowly so as to not cook my fish).So far it has kept the tank at a constant temp. The heater was easy to use, easy to install. Sticks great...." Read more

"...The heater failed in 5 months (it has overheating protection, which erroneously tripped, turning the unit off, and the heater would not reset to..." Read more

"...But with how nice the temperature adjustment is, I don't think that's enough to knock off a star for me." Read more

"...However, the temperature is consistently lower by 4 degrees. I have a 7.5 gallon tank so I bought the 100W heater rated for 6.5-13.5 gallons...." Read more

58 customers mention35 positive23 negative

Customers are mixed about the size of the thermometer. Some mention it's small enough that although it is fairly noticeable in the small tank, it fits in my one gallon tank. They like the small form factor and the integrated temp sensor. However, some say that the heater's size is pretty bulky for what's advertised.

"...Makes it easier to fit into smaller tanks, and the black housing blends into a black background reasonably well...." Read more

"...The only con for me is that it’s a little bulky for the smaller nano tanks (5 1/2 gallon and less) including thickness of the electric cord so it’s..." Read more

"...It's quite loud...see videothis heater is great for the size. love the button near the plug end to easily adjust the temp...." Read more

"...to like this heater as the current temp is very readable and the size is small. However, the temperature is consistently lower by 4 degrees...." Read more

30 customers mention13 positive17 negative

Customers are mixed about the display of the thermometer. Some mention it's very bright, clear, and idiot-proof. They appreciate the digital reading on the front that shows the temperature of the water. However, others say that it reads HH when the temperature is higher than set.

"...Water felt like a hot tub, digital display read HH, and both my fish were dead and cooked...." Read more

"...-Easy to read and set. The LED display is pretty idiot-proof (I'm new at this fish keeping stuff so I appreciate idiot-proof)Cons:..." Read more

"...It was set to 80 but after a few months, it would only show A9 or A0. I recently tried to adjust it to 74 for caridina shrimp...." Read more

"...However, it does fit in there. It’s nice that it has a digital readout to satisfy my wife’s curiosity...." Read more

37 customers mention0 positive37 negative

Customers are dissatisfied with the noise produced by the thermometer. They mention that it makes a really loud noise, squeaks, and occasionally screams when it comes on. Some say that it starts to develop a high pitch sound reminiscent of steam, a strange beeping noise, and bubbling noise. It also vibrates very loudly and makes waking sounds, such as a popping sound and a clicking sound.

"...It's quite loud...see videothis heater is great for the size. love the button near the plug end to easily adjust the temp...." Read more

"...My only major issue with this heater is that mine occasionally squeals when the heater comes on and it stays on the whole time as it heats...." Read more

"...Plugged it in and it was making a weird noise when the heating element turned on so I contacted the seller about it and with no hesitation they told..." Read more

"I purchased this heater in December and it's already making noise when the heating element comes on. I contacted Hygger but haven't heard back...." Read more

33 customers mention9 positive24 negative

Customers are dissatisfied with the suction cups of the thermometer. They mention that the cups never stick to the glass for more than 5 minutes, and that they detach. Some say that the product makes a weird audible hum when warming up. Overall, customers are not happy with the quality and functionality of the sucker cups.

"...but if the cord twists at all it also twists the heater and pops off the suction cups...." Read more

"...The suction cups don't work as well as I'd like but since it's heavy enough and my lid holds the cord in place it's stayed in the right place...." Read more

"...The heater was easy to use, easy to install. Sticks great. Only thing thats a pain is that you cant click down a temp...." Read more

"Suction cups are a little weak, I do find myself having to push them firmly back on to the glass. But honestly, I'm loving these heaters...." Read more

Accurate temperature control and heating
5 Stars
Accurate temperature control and heating
I had purchased the more expensive brands that didn’t have accurate temperature sensors and this seems to be the only brand that is true to it’s name. AQQA failed all categories of heating and temperature control. On multiple levels I have tested my brand new AQQA heater and it was wildly inconsistent with current temps. This test was done on a uninhabited tank due to the loss of my tropical plants and fish. I have 4 tanks and the reading on this tank was my final test of 3. The other two tanks were smaller but I had to test against inadequate results side by side. Hygger was the only product that had clear and consistent results with true success across all platforms of suction, heating, and accuracy of temperature.
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Reviewed in the United States on May 7, 2020
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3.0 out of 5 stars Preciso pero muy ruidoso
Reviewed in Mexico on December 28, 2023
Size: 50W (1-6.5 gallon)Verified Purchase