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AquaMiracle

AquaMiracle Adjustable 30W Small Aquarium Heater Submersible Fish Tank Heater Betta Heater Turtle Heater Super Mini Aquarium Heater with Digital Display Thermostat, for 4-6 Gallon Tanks

    • Based on 575 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Sunday, Nov 24
Order within 10 hours and 41 minutes
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Size: 30W


Features

  • SUPER MINI SIZE This small aquarium heater is thumb size - only 2.36 (6cm) in length. Great for nano tanks / betta tanks. The innovative super mini size perfectly solves the headache of the fish keepers on the traditional heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F, for 4-6 Gallon tanks.
  • ACCURATE TEMPERATURE Thanks to the intelligent inverter technology, with the in-built chips this thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled heaters. The thermostat shows 2 readings the current temperature and the set temperature very easy to operate.
  • DRY RUN / OVERHEATING PROTECTION Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level or when the water temperature exceeds 97F. You are free from cooking fish!
  • MEMORY FUNCTION The last setting is stored in the thermostat. In case of a power cut, when the power recovers the heater will follow the last setting.
  • MULTIPLE USES This heater can be used for both fresh and marine water. It can be not only used as an aquarium heater, but can also work for turtles, pet fountains, and plant seedling.

Package Dimensions ‏ : ‎ 6.02 x 3.23 x 2.09 inches; 5.61 Ounces


Date First Available ‏ : ‎ August 12, 2022


Manufacturer ‏ : ‎ AquaMiracle


Best Sellers Rank: #5,748 in Pet Supplies (See Top 100 in Pet Supplies) #9 in Aquarium Heaters


#9 in Aquarium Heaters:


Customer Reviews: 4.4 4.4 out of 5 stars 575 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Small but works
Size: 30W
Review Image by Amazon Customer Amazon Customer
I've had this heater for 7 months now. It is hard to find a heater for small tank, but this is just perfect. It heats up nice and would stop when it reach the desired temp. I set this to 80. Its easy to adjust, for the first time of use. I also like the fact that I can see on what temp it is and the light coming from the LED screen is not too bright. It also has a goog grip to it, it has never fallen ever since I put it in the tank. My betta loves to snuggle beside it for warmth and so far he has never been burned or get stuck. Very affordable too, compared to other ones. ... show more
Reviewed in the United States on September 26, 2023 by Amazon Customer Amazon Customer
    • Defective? Can be made to work, but you probably will also need a separate thermometer
Size: 10W
I bought the 10W version for a 1.6 gal tank. I like its size. But there are a couple of issues. The temperature reading is not stable at all. The displayed temperature continually varies between 1/2 to 1 degree, switching the displayed temp by a tenth of a degree every 2 to 4 seconds. For example, over the course of 20 seconds it drops from 76.2 down to 74.5, then over the next 20 seconds climbs back up again. The actual tank temperature cannot be changing that much that fast. The heater was off for that range (I had it set for 72), but while it is on, the readings also vary about the same amount. Because of the variation, you cannot rely on a quick glance at the heater display to tell you the tank temp, o you are going to need a second tank thermometer. Since the heater turns on when the temp drops to .3 degrees below the set temp, you need to base your setting on the lowest temp, so you'll need to pay attention for a minute or two before you know what that is for a given tank temperature. With a separate tank thermometer, you can make this work by noting the difference between the heater's lowest read temp and the tank thermometer's reading and subtracting that amount from the desired tank temp for its setting. Also, the heater turns off when the sensed temp rises above .3 degrees below the set temp. For example, if the set temp is 72 deg, the heater turns on at 71.7 and off at 71.8. The instruction manual states that it is supposed to turn off when the temp rises above the set temp (which would be at 72.1 if it was set for 72.) Given the sensor variability from the actual tank temp, as the tank temp first drops below the set temp - .3 deg threshold, the heater turns on, but will then turn off right away as the sensed temp climbs above the threshold. The heater would not be turned on continuously until the tank temp actually drops 1 degree below the set temp (so that the reading variation would not be enough to turn it on again). I can't think of a reason why the temperature readings should vary this way, perhaps my unit is defective? ... show more
Reviewed in the United States on August 17, 2023 by Sarah A Lynn
    • Perfect for 3 gal tank and betta
Size: 20W
Initially because I had a small tank I bought one of the flat heaters without temperature control and it nearly boiled my fish. After reading reviews I chose this one. Because of other household considerations I have to keep it a bit colder and where the tank is it's in direct airflow. Thankfully the operation of the unit is simple and it has kept the water temperature pretty consistent despite the environment. Even in a small tank it's unobtrusive. I have a round tank so the unit fit as well as being closer to the plastic it didn't heat up the tank wall from what I could determine from the outside. After about a week's operation I have to say I'm fully satisfied. ... show more
Reviewed in the United States on August 26, 2023 by Amazon Customer
    • Works
Size: 20W
So far so good. I’m not sure if the temp there of the water is that accurate … I use it bc it does give off some warmth but doesn’t feel like the 81 degrees it’s trying to say it is. The tank isn’t big at all either. But I know it’s not as cold as it was without it. My fish likes to sleep by it as well so maybe he’s fine with it haha ... show more
Reviewed in the United States on September 6, 2023 by C.Y.Daniels
    • Works great
Size: 10W(USB)
This worked great for my Betta’s small tank until I could transfer him to his bigger tank. I liked the digital temperature display so there was no guessing games. I also like that the temp is adjustable. It kept my fish’s tank at the perfect temperature for him.
Reviewed in the United States on September 21, 2023 by andrea
    • Display
Size: 10W(USB)
Its betta approved. My fish have never been happier. It keeps the water at 77. And what I love about it. Is the current temperature on the display.
Reviewed in the United States on September 23, 2023 by Eddie
    • Small & Perfect size .
Size: 10W(USB)
Fits nice n Beta mini tank
Reviewed in the United States on September 28, 2023 by linda mixon
    • Keeps the water tropical warm.
Size: 10W(USB)
The constant temperature is a plus for my betta fish.
Reviewed in the United States on September 4, 2023 by wigginsosc

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