Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

Its a really good lil heater i bought it about 3 months ago and my betta loves sleeping on it for some reason. Also dw it wont burn your fish to a crisp bc like i said my betta likes sleeping on it instead of the plant leaves so if you have a betta with no place to sleep i suggest you put the heater as close to the surface as possible and make sure its still completely submerged like the instructions suggest and maybe your betta might like sleeping on it. Also when my idiot brother didnt take care of his betta about half the water evaporated outta the tank and he never topped it off so the heater was sticking out like a sore thumb so when i took his betta (bc hes so irresponsible) i actualy saw the heater was STILL WORKING! even tho it wasnt even in the water and it was still plugged in the wall all that time, it never even burned out or over heated. Pretty good lifespan considering it was halfway out of the water for about a month or 2 idk bc my idiot brother neglected the poor betta for who knows how long (Dw guys the betta is in safe hands and dw they arent sharing the same tank or even near each others tanks) I rate 5 stars for how long it lasted, its pretty cheap price and also that my betta thinks its very comfortable to sleep on. My betta loved it and even when i took my brothers betta i put together a new tank and let it cycle so while it did that i had to put his betta in a tupperware with that heater and i actualy caught his betta sleeping on the heater to so this is essentially a heater and a bed for bettas! ill put an image to show you my brothers previous tank with the heater in it to show you it was still working even tho it wasnt completely submerged for about a month or 2. Even if it breaks ill most likely buy another one from this seller bc of how cheap and hardy they are, it already lasted a couple months out of water so i doubt it will break anytime soon and my heater is already 4 months old and doing great so id say these are pretty good quality heater for the price they are selling for and also very comfortable for both of the bettas to sleep on bc of the plastic guard that wont cook them but rather keep them warm at night!

I bought this aquatic heater for my red-eared slider turtle, and it has been working great. It keeps the water at a perfect, consistent temperature, which is extremely important for turtle health—especially since my turtle is currently housed in a cold garage. Despite the colder environment, the heater maintains the set temperature without any fluctuations. It feels well-built and durable, which is important in a turtle tank where equipment can get bumped around. Installation was easy, and once set, it requires very little maintenance. Overall, this heater has been reliable, efficient, and gives me peace of mind knowing my turtle stays warm even in a colder space. I’d definitely recommend it to anyone keeping a red-eared slider or other aquatic turtle.

Low maintenance heater. Durable over time. Maintains set temp range very consistently with minimal adjustments. Low price for good quality. I’d purchase this brand again. Adjustment knob is a few degrees off from the actual water temp. You have to adjust it a bit over the course of a day or two and compare it to thermometer to find the water temp you’re aiming for. Once it’s set, however, it maintains water temp reliably and consistently with hardly any maintenance Other than that, it works fine. No problems

A pretty great heater, but I believe the temperature is inaccurate since my thermometer consistently gives me different readings while using this heater. It definitely gets the job done, but it’s not precise.

Great little inexpensive heater. I added this to a small 2.5 gallon shrimp tank and it's working great. No manual adjustment, which is fine. I will say it does struggle sometimes on incredibly cold days (it's in the basement and it's in a room that has the door shut 24/7 and no heat supply, so its always about 60 degrees ambient in the winter) but by that, i mean it might drop to 76 degrees or so for a few minutes. The compact size and clean, simple aesthetic is what really made me choose this one specifically, and I don't regret it. I will definitely buy another of these next time I'm in need for a small heater.

Nice looking, solid unit. 100W works well in my 20g tank. Tank is in a coldish bedroom and it brought up the temp ~15 degrees F quickly. The separate temp gauge is really handy, almost worth the price alone. Probably will order another unit soon to replace an old one on another tank. (Update - I still like the heater but I think the separate temp gauge isn't accurate - reads higher than two other units I tried)

Exceeded expectations. It is still running after years. This thing is built like a tank

Pictures are blocked by turtles but honestly it’s amazing. A lot of options in temperatures, thick glass indeed and it works later on when I decide to upsize my tank... as of right now I have a 40G and I’ll need to update soon since I added another one. Also the thermometer works, I just drop the sensor in the water and it gives me an accurate reading in F/C.

Best heather I have bought and I have tried many. The temperature control look knob is easy to adjust and works smoothly. The overall quality is great. The glass casing his quite thick and sturdy. Easy to adjust and precise. The thermometer supplied with the heater is also excellent. Great deal, i highly recommend.

I use this water heater in a 15 gallon aquarium. It takes some time to calibrate it properly the first time I use it. Once done, it is reliable and keeps the water at more or less half a degree away from the desired temperature. This heater is very sturdy and I like the fact that it is fully submersible. Some water heaters cannot be completely submerged and this is annoying when you have a cover on the tank. Another advantage, is that for the same price, you get a digital thermometer as a bonus with the water heater. I had a traditional thermometer strip, the one that sticks to the glass. Honestly, I much prefer the digital one! You can place it wherever you want using two suction cups. The sensor being directly in the water gives me the impression of getting a more accurate reading of the temperature in my tank. The only downside is that the suction cups (2 for the water heater and 2 for the digital thermometer) take forever to hold in place. But here again, once well positioned, they don't move anymore. ----------------- Français ----------------- J'utilise ce chauffe-eau dans un aquarium de 15 gallons. Il faut un certain temps pour bien le calibrer lors de sa première utilisation. Une fois fait, il est fiable et maintient l'eau à plus ou moins un demi-degré d'écart de la température désirée. Ce chauffe-eau est très robuste et j'aime le fait qu'il soit entièrement submersible. Certains chauffe-eau ne peuvent pas être submergés complètement et c'est embêtant quand on a un couvercle sur l'aquarium. Autre avantage, pour le même prix, vous obtenez un thermomètre numérique en prime avec le chauffe-eau. J'avais une bande de thermomètre traditionnelle, celui qui colle à la vitre. Honnêtement, je préfère de loin le numérique! Vous pouvez le placer où vous voulez grâce à deux ventouses. La sonde étant directement dans l'eau me donne l'impression d'obtenir une lecture plus juste de la température de mon bac. Seul bémol, les ventouses (2 pour le chauffe-eau et 2 pour le thermomètre numérique) prennent une éternité à bien faire tenir en place. Mais là aussi, une fois bien positionné elles ne bougent plus.