hygger Mini Fish Tank Submersible Heater 50W for 5-10 Gallons Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
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Availability:
In Stock.
Arrives
Monday, Aug 31
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Size: 50 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 50-watt Betta heater with a 4" long x 1" high heating element design takes up very little space, which could effortlessly fit into 5-10 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, and use the two suction cups to make it easier installed vertically or horizontally on the tank wall. Make sure to unplug before water change or cleaning cool down the fish heater for 15 minutes
Description
Note: Temperature is shown in °F only. Cannot switch to Celsius. Note: This heater is not suitable for saltwater aquariums.
Package Dimensions : 6.46 x 5.28 x 1.73 inches; 9.59 ounces
Item model number : HG142
Date First Available : May 24, 2024
Manufacturer : hygger
Best Sellers Rank: #5,755 in Pet Supplies (See Top 100 in Pet Supplies) #10 in Aquarium Heaters
#10 in Aquarium Heaters:
Customer Reviews: 4.5 4.5 out of 5 stars (365)
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: 6.46 x 5.28 x 1.73 inches
Brand Name: hygger
Directions: adults 18 years and older
Warranty Description: 1 year manufacturer
Model Name: aquarium heater
Color: black
Size: 50 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:
Monday, Aug 31
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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Top Amazon Reviews
Size: 50 Watt
Love this water heater. I’ve been using this for a week and it’s made my life easier maintaining the temperature in my aquarium. In the past I would use the ones with the old fashioned temperature scale and it would be hard to read. This one has the digital readout so it’s easier to read. It’s also very easy to set the temperature and works well as I could feel the difference as my water was at 66 degrees and when it reached 75, it was noticeably warmer.
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Reviewed in the United States on April 6, 2026 by Father of Five
Size: 50 Watt
I have 3 of these particular heaters now. They are not hot to the touch and they keep the water reliably at the temperature you set it at. This brand is fast becoming my favorite for my aquariums.
Reviewed in the United States on June 7, 2026 by Amazon Customer
Size: 50 Watt
Best EVER heater for aquariums. I have tried 5 different brands, this being the fifth one. Call me crazy, but I'm extremely paranoid when it comes to my pets. I've read horror stories about heaters breaking, zapping fish, or overheating and cooking fish. Any time a heater has any kind of temperature issues or temperature control issues, I throw it in a box and return it. I don't play when it comes to my creatures' safety. I had three heaters, two of which were brand new, that we're heating to higher temperatures than I was setting. In addition, they would constantly turn on and off before reaching the desired temperature, taking a long time to heat up. I would have to adjust these heaters constantly depending on my room temperature, but not with this one. This heater heats quickly and doesn't burn you or any fish. I've previously touched my heaters before in the tank while they were running and got scorched. Imagine if a small fish touched that. Oh no!!! While you can buy a plastic heater guard for these traditional heaters, they cost $15-25 for each guard. Yikes! That's as much as the heater itself! This one has a plastic guard built-in with it's design already. Genius. I can touch the heater without being burned and so now I'm sure my fish and snails will not be burned. It also has a remote to make it easy to adjust the temperature without putting your hand in the water. I do notice the thermostat reads 2 degrees lower than my regular tank thermostat, so I set the water to 76F degrees and it achieves a consistent heating of 78F degrees for the tank. Although this is a minor inconvenience, the pros far outweigh the cons. Every day it's kept the tank at a consistent temperature and I don't feel scared to constantly check the temperature like how my other heaters had me checking. Love LOVE this heater and will be buying the 100w and 200w versions for my 20 gallon and 30 gallon tanks. My 50w heater here pictured is in my 10 gallon Betta tank.
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Reviewed in the United States on July 26, 2025 by Cat Nguyen
Size: 50 Watt
Works as it should! I keep my water for my neon tetras and Cory’s around 73 to 74. It’s staying on it! Tiny and compact. Works great! Fast shipping.
Reviewed in the United States on July 15, 2026 by Joseph r sizemore
Size: 50 Watt
Great heater. This heater worked great for my sons 10 gallon tank.
Reviewed in the United States on June 7, 2026 by Serenity acres ESVA
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 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
Worked great for a month (specifically one month and a day) and then it stopped working. Constant beeping with an error that meant it wasn’t fully submerged, even though it was fully under the water with plenty of clearance. Now rushing to find another heater. If you buy this, have a backup option just in case. Besides the defect, size and functionality was fine. Easy to use and temperature on the remote was accurate when compared to the tank thermometer. Seems safe. Unfortunately because it barely lasted 4 weeks I can only give it one star.
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Reviewed in the United States on July 24, 2026 by Kat
Size: 50 Watt
This was perfect for my 10 gallon snail & shrimp tank! Easily hidden, and the temperature gauge on the controller is really nice.
Reviewed in the United States on March 26, 2026 by Kailee