hygger Mini Fish Tank Submersible Heater 75W for 10-15 Gallons Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
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Availability:
In Stock.
Arrives
Sunday, Feb 15
Size: 75 Watt
Features
- Beep Alarm, Fault Prompt: Our nano aquarium heater has safety features such as low water level shutdown and overheat protection. When the temp control system detects a malfunction in the equipment, it will give an error code alarm and stop heating to prevent any potential damage or injury. Note: Although the system will automatically turn off the power when a malfunction occurs, residual heat in the heating rod may melt the shell. Please handle it as soon as possible
- Black Look & Mini Size to Hide Easily: The 75-watt Betta heater with a 4" long x 1" high heating element design takes up very little space, which could effortlessly fit into 10-15 gallon small aquariums and is also suited for shallow water turtle tanks
- Adjustable Temperature Control: hygger mini submersible heater includes an external thermostatic temperature controller, you can easily set the temperature by cycling between 59 and 93 degrees, and the digital display makes for intuitive viewing of real-time water temperature. Once the heater is on, an indicator light will tell you whether it is in heating mode or on standby
- Intelligent Automated Heating: This small fish tank heater effectively maintains the water at a steady temperature, when it reaches below your set temp, it kicks on and then turns off when it reaches the desired temp. Also, with the memory function, you don't have to reset the temperature if you get power outages
- Safety Instruction: Please keep the heating rod fully submerged, use the two suction cups to make it easily installed vertically or horizontally on the tank wall. Make sure to unplug before water change or cleaning, cool down the water heater for 15 minutes
Package Dimensions : 6.42 x 5.35 x 1.93 inches; 9.59 ounces
Item model number : HG142
Date First Available : May 24, 2024
Manufacturer : hygger
Best Sellers Rank: #2,841 in Pet Supplies (See Top 100 in Pet Supplies) #9 in Aquarium Heaters
#9 in Aquarium Heaters:
Customer Reviews: 4.6 4.6 out of 5 stars (488)
Item Weight: 9.6 ounces
Manufacturer: hygger
Item model number: HG142
Date First Available: May 24, 2024
Item Package Dimensions L x W x H: 6.42 x 5.35 x 1.93 inches
Brand Name: hygger
Directions: adults 18 years and older
Warranty Description: 1 year manufacturer
Model Name: aquarium heater
Color: black
Size: 75 Watt
Age Range Description: Adult
Included Components: heater element
Specific Uses for Product: use in aquariium
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Feb 15
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 50 Watt
I’ve never left an Amazon review before, but for this product, I will. At this price point, this heater is leaps and bounds above any other heater I’ve seen available at a pet store. It’s cheaper than similar heaters I’ve purchased from Petco/PetSmart, but feels like a luxury upgrade. It’s just so well designed and functional. The built-in thermometer is awesome, its adjustability and range is awesome, its alarm for when it’s not submerged or not is awesome - I have nothing but good things to say. It has been efficient and reliable and great for keeping the water warm for my pea puffers. Highly recommend.
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Reviewed in the United States on January 23, 2026 by Alize Cooper
Size: 50 Watt
Im very happy with my 10 gallon aquarium's temperature now, and so is my betta. It works consistently and is accurate when reading the temp of the water. Was easy to set up and is still stuck to the aquarium with the suction cups that were included. Definitely worth the purchase for me.
Reviewed in the United States on December 12, 2025 by Heather
Size: 20 Watt
I’ve been looking for a tiny heater for my 5-gallon Betta tank for a while now, and most of them are just way too big or look ugly in the tank. This Hygger one is perfect. It’s super small (about the size of a couple of fingers) so it’s easy to hide behind a plant or some driftwood. The best part is the external controller. You don’t have to stick your hand in the water to change the temp, which is a huge plus. I checked it against my separate thermometer and it stays right on the money—it hasn’t fluctuated at all, even when my room gets cold at night. It feels really solid too, not like some of those cheap plastic ones. If you have a nano tank or a small bowl, this is definitely the one to get. My Betta is way more active now that his water is actually a consistent temp. Definitely worth it!
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Reviewed in the United States on December 27, 2025 by Jason Starks Jason Starks
Size: 20 Watt
This is the best nano heater on the face of the planet. Suction cups hold the heater in place. Great quality and it perfect for my 2.5 gallon aquarium for betta. Has a digital thermostat and temperature read out of your current water temperature. Very accurate. Not need for internal thermometer or a external thermometer. Definitely worth the money to keep your betta healthy and alive. I have several hygger heater one for my 45 gallon tank and one for my 75 gallon monster tank. They have never broken. Just make sure when you put the heater in the tank for the first time or do any water changes to unplug it and wait 30 min before plugging it back in because the heater need to acclimate to the current water temperature before you plug it in. One advice most people getting into the aquarium trade for the first time make this mistake and plug the heater in right away and break the heater or shatter the glass tube. Also when setting your desired temperature you can only raise the heater by 2 degrees every hour till you reach the desired temperature because anything more than that will kill all your fish. Remember you need to acclimate your fish to the new temperature also or they will go into shock and die. So if your water temperature is 70 and you want 78 degrees you can only raise the temp 2 degrees every hour till your target temp is achieved.
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Reviewed in the United States on January 11, 2026 by Superfly
Size: 75 Watt
**Update: The issue may have been the probe thermometer. I have tried 2 other heaters, and the same issue occurred. Accept, one heater said it was set to 79, and the thermometer was reading about 77. I have a new heater in the tank now, that has an attached probe thermometer and the temp is set to 79. I also used a regular glass thermometer, which is showing 79. So I have a feeling it may have been the thermometer all along and not the heater. So for that, I'm changing the rating to 4 stats, only because I can't be 100% sure. Also, I had the 75W for a 13.3 gallon, and it seemed to work a bit more overtime, compared to the 100W I now have. Otherwise, seems like it may be a good option after all. I love the look of this heater, and the ease of use. I ordered this heater for a 13.3 gallon tank, that a Betta was going into. Because it is a special order, my grail, Betta, I am not taking any chances with possibly harming it. I ordered an in tank thermometer, and there is almost a 2 degree difference between what the heater is set to, and what the thermometer says. The heater is set to 77, and the thermometer has been between 78.6 - 78.8. I initially had the heater set to 79 for my Betta, but the water temp felt warm. I put the thermometer in, and the tank was 80.8. I believe the thermometer more so over the heater itself. I don't know if this one is defective, or if this is a common issue & just how it works. I'm not confident in this brand, and will likely get a heater from a different brand altogether. Overall, it doesn't seem to function as it is supposed to, but it does seem relatively durable. I can't speak for the longevity, because I've only had it 3 days. The suction cups kept separating from the tank, and it would just kind of hang there, but eventually they stuck to the glass. It's an okay heater, but not one I would purchase again, or recommend. Looks great in the tank, but doesn't work as it is supposed to. For some fish, a 2 degree difference / fluctuation can be an issue. Not worth the risk to me.
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Reviewed in the United States on November 14, 2025 by Leilei Leilei
Size: 20 Watt
WORKS GREAT, IT GIVES YOU A READING ON THE TEMP AND YOU CAN AJUST IT
Reviewed in the United States on January 6, 2026 by Lloyd
Size: 20 Watt
I've had it going for a couple of weeks now and it's holding my tank water steady in a room that is not heated. I really like the auto-off function when I'm doing water changes and it's exposed to air. It warns me with beeps and then turns off so it doesn't ramp up and blow a fuse.
Reviewed in the United States on January 22, 2026 by lettielikesbooks
Size: 20 Watt
I have an unusual use for this heater. I have an outdoor fountain for birds (and squirrels) to drink from. I wanted to prevent freezing in the winter so I've added this heater. It has done an excellent job in preventing heating. I keep it on the lowest temperature setting and it kept the water flowing when the temperature was down to 12 F one night. My only negative is that it constantly beeps when it is below the temperature setpoint. Good for fishtanks, not so good for outdoor fountains in cold climates. I wish the beeper could be disabled, but I know my use is not the normal one. The compact size is excellent for fitting within the fountain. I keep the controller in a waterproof box.
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Reviewed in the United States on December 31, 2025 by Scott McCarter