Mini Aquarium Heater 5V/2A USB 10W Small Fish Tank Heater for Tanks 1 Gal

I love the tiny size and price of this heater! It isn’t enough to heat a half gallon tank when the house is 67 degrees but works great in tiny bowls. Setting the temperature is super easy and it never went higher than it was supposed to. My betta likes it warm and there is no noise and no annoying light in the heater. My son also likes it with his fish.

Good quality for the price! It sticks to the side of my micro tank well and keeps the temperature consistent. My little shrimp seem to be happy.

Does not seem to be working AT ALL. I have it in a very small 2 gallon tank and it is reading as "78 degrees" but I am feeling it with my fingers and it's ice cold. I have another tank right next to it that is ACTUALLY 78 degrees and it's much warmer and more appropriate. I see similar reviews. Do not purchase.

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.

Excellent little heater!!!! This is my 2nd purchase of this heater. Easy to set up works great for my 1 and 2 gallon fish bowls. Bettas are extremely happy.

This 10W aquarium heater works just as advertised. It’s small, easy to hide and the suction cup holds it securely in place. The display shows the current temp and with a quick press of the button you can see the set temp. There is a memory feature in case it loses power, when it comes back on again it remembers your last preset temp setting which is awesome. I chose the USB power option…I have it plugged into a wall adapter, but if we lose power during a summer afternoon storm (happens a lot) or during a hurricane, I can plug this into a battery pack and know that my beta is keeping warm! Temperature range is up or down of 1 degree from set temp..just like your house AC. I have it set to 79…when it reaches 78 point something the light turns red indicating heating, when it reaches 80 degrees the light turns green letting me know temp is set and constant. The temp matches my tank thermometer perfectly and my beta couldn’t be happier! (She likes to hang out back by the heater when she’s resting) We will be upgrading to a larger tank soon and I plan to buy a larger watt from this brand. If you’re looking for a tank heater, this is a great option that works just as it’s supposed to!

Was easy to program and install in the tank and was working very well for our frogs until it completely stopped working suddenly. Nothing unusual seemed to happen to it, it simply stopped turning on. Didn't even last 2 months. Follow up: customer service was easy to work with and the problem was solved. Great customer service.

UPDATE: The company reached out to me from my review and provided wonderful customer service, which was very nice being outside of my return window. Hopefully, they can adjust the default on these to reset at the lowest temp for other users. Great customer service is a wonderful attribute to this company. This little heater was working wonderfully for my betta ... until it killed him. It kept the temperature I set it on great and seemed really accurate. The size is perfect for a small tank. The problem is if your power flickers and you have this plugged in it automatically defaults to 74 degrees. My betta was best at 68 degrees. That is a really big difference for a small tank and a fish. The default should be the absolute lowest temp, not the highest. So the power flickered while away from my fish and I came back to a chunk of the water evaporated and my fish dead. I am literally a few days out from my return window, so I lost the cost of my fish and the cost for this. So frustrating.

Excellent produit. Identique à la description et aux photos. Parfait pour les MINI aquariums. Utile pour plusieurs possibilités, je l’utilise aussi dans un très petit aquarium d’appoint quand j’ai besoin d’isoler un poisson malade par exemple… Permet de bien contrôler la chaleur et de maintenir la bonne température d’un petit espace. Très satisfaite.

I have a 1.5 gallons and this heater is perfect in size. Water keeps at right temperature (goes up and down a little bit but not significantly) so does what is supposed to.

Trying to keep our fish warm