Adjustable Mini Aquarium Heater 0.5/1/2/3 Gallon Submersible Small Fish Tank Heater 10W/20W/30W Digital Display Thermostat External Temperature Controller (10W)
Original price was: $18.99.$18.04Current price is: $18.04.
Price: $18.99 - $18.04
(as of Oct 20, 2025 03:47:25 UTC – Details)
From the brand
YOFOTHS provides your with quality aquarium equipment and services. Lengthy testing and multiple inspections are a must for every product, and we do our best to provide high-quality products.
10W 20W 30W Aquarium Heaters
50W 100W 200W Aquarium Heaters
Algae Scraper & Water Pumps
Package Dimensions : 6.65 x 3.46 x 2.05 inches; 5.61 ounces
Date First Available : December 15, 2022
Manufacturer : YOFOTHS
ASIN : B0BQ6KGBLG
Best Sellers Rank: #23,771 in Pet Supplies (See Top 100 in Pet Supplies) #52 in Aquarium Heaters
Customer Reviews: 4.2 4.2 out of 5 stars 1,079 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); } }); });
Small And Powerful: This aquarium heater is about 2.36 inch long . It is specially designed for small fish tanks and does not occupy any space. Upgrade the chip to make the temperature sensing more sensitive and the temperature rise more accurate
Intelligent Memory Function: After setting the target temperature, the power is suddenly turned off, and the target temperature remains unchanged after turning on the power again
Overheating Protection: If the water temperature exceeds 95°F, the error code “HI” appears, the heater stops working, and when it returns to below 95°F, the error code disappears and it starts working again
External Controller: External temperature controller, no need to get your hands wet, no need to buy other controllers, 52 inch long power cord, easy to install, easy to control
Widely Used: Suitable for freshwater and saltwater, meet the growth temperature for turtle, Fighting fish, Dwarf Gourami, Koi, Corridors, Paradise Fish, Clownfish, swordtail
Customers say
Customers find the aquarium heater easy to use and read, with accurate digital readings and perfect size for 2-gallon nano tanks. Moreover, they consider it good value for money. However, the functionality and temperature control receive mixed feedback – while some say it gets the job done, others report it stops working correctly and won’t heat past 73 degrees. Additionally, the lifespan is concerning, with multiple customers reporting it broke after two months of use.
13 reviews for Adjustable Mini Aquarium Heater 0.5/1/2/3 Gallon Submersible Small Fish Tank Heater 10W/20W/30W Digital Display Thermostat External Temperature Controller (10W)
Add a review
Related Products
Original price was: $18.99.$18.04Current price is: $18.04.
Lisa M. –
Pleasantly Surprised
I needed a heater for a 2g shrimp tank and this is the smallest one I could find. I was a bit concerned about longevityâit is an inexpensive product from a Chinese company with a gibberish English name, after all. But itâs been in continuous use for over a year at this point and itâs still going strong. I keep my house at 67 degrees during the colder months and this little guy keeps my shrimp toasty at 72 degrees.My only complaint, which is very minor, is the suction cup didnât hold for long. The tank itâs in is a 2g glass cookie jar-type jug, so it may just be that thereâs no flat surface to stick to.
Not a reviewer –
Great little usb heater
Keeps my little 2.5 gal tank at a great temperature, seen a lot of complaints and I suppose the company listens and corrects things because the programming seems better than some reviews led me to believe. I plugged this into a power bank 72,000 mAh (huge bank). When the power on the bank ran out and shut off, I switched the power bank, everytime I plugged this heater back in the temperature stayed at the temp I has set. I even tested this thoroughly, I tried it at 72°,then again at 74°, and again at 73°, then again at 74°. Everytime it wakes back up, it hold the temperature I had set prior to power failure. I now keep it plugged into a usb 2A phone charger for power receptacle and it’s been holding great for over a month in that spot too. Green light tells me temp is good, red light tells me it’s heating, temperature readout match’s my tanks thermometer, and will be useful to detect failure if only the element fails.Will buy again for other 2.5 gal tanks, might use one for the 5 gallon that I’m gonna setup. Highly highly preferred over those crap preset heaters, and honestly I’ll probably look at the other models of this for any needs below 50 watts.
pearlsport –
Small aquarium? This 10w heater does a good job.
We have a 2.5 gallon aquarium, with a Crown Tail Beta and 3 small Neon Tetras. Ideal temperature is 76F to 77F degrees. First, itâs not USB, and this operates on standard 110/120 plug. Exactly what I wanted. Installed the heater upright in one corner of the tank. I found that setting the heater to 78F keeps the water at 76.5F, measuring with a temperature probe furthest away from the heater in the opposite corner. Keep in mind that the heater is reading the water temperature at the heater, so adjust accordingly. I also use an âold schoolâ floating glass thermometer for confirmation. It reads a constant 76+F. Setup is easy with suction cup, and adjusting the thermostat temperature is simple with pushing a button. The heater kicks on with a red light when the temperature drops 0.2F below setting, and kicks off with a green light when temperature reaches within 0.2F of set temperature. As itâs only 10w, youâll see the temperature display drop until it heats back up. This cycle only lasts a couple of minutes. I must say, it works very well. And at only 10w, itâs not going to use much electricity. Iâll only be displeased if it doesnât last awhile, but first impression is, itâs a winner.
JayLea Utera –
Ultimately, cost me over $100. Expensive lesson.
If I could give it zero, I would. I’ve gotten 2 of these and both have quit working within less than a week. The first time, it cost me a $15 betta and I thought it was a fluke. The second time, it cost me $100 worth of tree frog tadpoles.The worst thing is, you don’t know it isn’t working until the thermometer on the cord drops to 73-74f.Do not order if what you’re heating requires consistent, reliable, steady temps.
Jessica –
It’s perfect for my tank
I have a 2-gallon betta glass tank and it works great
TN –
Great heater for nano fish tanks
I went with the straight plug 10w as I think the USB version might not provide sufficient power to keep the heater at longer durations. So far so good on a 1.2 gallon tank. My son’s betta fish seems to be more active after the 2nd day and I can confirm that the water temperature is warmer than before. The 10w version is probably great for nano tanks from 1-2 gallons max. Not sure of the lifespan but fingers crossed.
Suzanne Bennett –
Consistent…
After reading the reviews, I set the 10W heater a couple of degrees higher than desired in a 3 gallon tank. I wanted 72 degrees, so I set it at 74. It took a couple of days for the temperature to reach 72, but it has stayed at that temperature consistently for a week. This tank is just getting started, so there are no fish yet. Probably best to start out with an uninhabited tank to provide plenty of time for the heater to get established.
Agray –
Love my fish loves it more
I do love it. Design:Small
Annie –
Parece roto no se si es seguro usarlo
GA –
I’m using it to heat a small jug for hatching brine shrimp. At this price point, it’s impressive that it has variable temperature settings and a digital temperature display. For the first few days, I monitored the temperature with an Inkbird controller and it proved reliable enough for my purpose.
Motasim N. –
Am totally not recommend itit works only around 30 days!!!its function princible is crazy.. it will turn on/off frequently within short time
Karen J Gray –
It is too early to say anything about service life but these are working better than Inhad hoped for.The rooms have been very cold here and a 50W preset heater simply couldnât raise the temperature high enough above the ambient to keep betta fish comfortable in tanks of 5 and 7 gallons.Adding one of these to each tank solved the problem. The water temp does not match the set temperature exactly but it doesnât matter because I always use a manual thermometer to double check.Once I had the water at my desired temperature they maintained it and the fact they donât match set temp to actual water temp under these conditions is simply no big deal.The room temperature drops to 15-16C at night and is about 16-17C days and Iâm happy if the tanks stay at 77F. I could have them up to 80F but I think the fish are better off a few degrees under that.The heaters have been in use about a month and so far so good, Iâm quite pleased with them. They are very short and as heaters this size go, very unobtrusive.I hope they last at least a few years.
too many fake reviews –
Well its trash they wrote 10w up to 3 gallon yet the very booklet that comes with 10w says 20w for 3 gallon, its also broken and changes tempature every few seconds both up and down lol i was scammed luckily can return