10 best small fish tank heater for 2022
It took days of going through more than a thousand customer reviews and conducting expert researches to narrow down the list. Weve included a comparison table below to give you a quick summary of our top 10 small fish tank heater. Its followed by an in-depth review of each small fish tank heater. Hopefully, once you are done reading this article, you will be well informed about small fish tank heater and be able to select the right small fish tank heater for you without any hesitations.
Best small fish tank heater
1. FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
Feature
Temperature range: 59F~94F15C~34C, 50W 75W 100W display Fahrenheit F200W 300W display Celsius CAutomatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
Touch button, cyclic adjust temperature , easy to use and Safety.
The heating rods to be completely immersed in water use, you can notleave the water for heating use,Please unplug the power supply when cleaning the fish tank or aquarium water changes.
12 Month Warranty and 24 Hour Professional After-sales Service.
Description
Multi-function LED digital display heater: Use advanced IC technology, perfect design,Oval appearance, large LED display. Clearly and accurately displays the
water temperature, highlights your aquarium.
Instructions
Temperature control switch box should be higher than water surface.
To get the best performance of heating up the aquarium , when you using this heater we suugest to use a wave maker at the same time to support water circulation.
Heater should be completely submerged in the circulating water to work properly.
Heaters can not be exposed above the water, Heaters can not working.
Warning
Please check whether this product uses a matching power grid voltage(110V/60Hz).
This product can not be repaired or modified by yourself, please ask supplier for suggestion.
Heater must be completely immersed in water, can not be exposed above water.
The heating rod is made of quartz glass assembly and cannot be easily damaged.
Turn off the power supply for 10 minutes before cleaning the tank or maintaining the heater.
When removing the heater, please don't pull the power cord directly.
The power outlet to which the product is connected must have a leakage disconnect switch.
The power socket for heater must have a broken circuit switch.
Specification:
Power: 50Watt
Voltage: 110V-120V, 60HZ
Heater Size: 2.5 x 1.5 x3.5 inch
2. Aqueon Small Aquarium Fish Tank Submersible Mini Flat Heater Up to 3 Gallon Aquariums, 7.5 Watts
Feature
Fully submersibleVertical or horizontal placement using suction cups that mount to the bottom or side wall of tank
Quick and easy installation
Shatterproof construction
Can be used with glass or acrylic enclosures
Note: Do NOT operate or leave product plugged in when it is outside of water
Warms aquarium water up to 6F above ambient room temperature
7.5 Watt works best for 1 to 3 gallon fish tanks
3. Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt
Feature
All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.The HT10 uses a built in electronic theromstat to automatically maintain water at 78 F which is ideal for most tropical fish. No adjustment is requried.
Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other dcor.
Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
4. FREESEA 25 Watt Aquarium Betta Fish Tank Heater with Aquarium Submersible Thermometer
Feature
25 Watt Heater This Aquarium heater is suitable for 1 to 5 gallons aquariums, Length - 6.8 inch,voltage 110-120V, power cord is 4.0 ft, please choose the right wattage aquarium heater according to our size chart.Temperature range: 63F~95F , It is very easy to adjust the temperature you need, we also deliberately give each customer a free diving thermometer, you can observe the water temperature of the fish tank at any time.
Intelligent temperature control Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. Furthermore, Automatic safety shut-off feature, and overheating protection.
Note: 1. Aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,Please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. Heater rod is suitable for people over 16 years of age. Children or minors should be under adult guidance or supervision.
SATISFACTION GUARANTEED Gain the confidence to go hard with us! Our Aquarium Heater is built with durability in mind and safety for every design, In the remote possibility that youre not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
5. DaToo Submersible 50W Aquarium Heater Adjustable Fish Tank Heater 50 Watt
Feature
DaToo 50Watt Fish Tank Heater - A suitable temperature is very important for our beloved fish. No suitable temperature, our fish will not survive healthy. How to create this comfortable temperature? DaToo will help you. The DaToo Submersible Aquarium Heater is a system that create a warm and comfortable living environment for your lovely fish. Select DaToo Aquarium Heater, Let us care about your fish starting from the temperature.Adjustable Temperature - Only need turn the knob on the top of the DaToo fish tank heater, You can easily get the temperature you want68 to 93F) and you can read the temperature you set by the dial of the aquarium heater. Perfect Thermostat system to ensure that your beloved fish can be happy and comfortable life. Very Convenient !
Sturdy And Durable - Still worried about the heater will be broken?Now let's say goodbye to this worry. The shell of the DaToo Aquarium Heater is made with Shatterproof, Corrosion resistant, Wear-resistant microcrystalline glass(glass-ceramics), can be used in fresh water and salt water.The heating part is made of nickel-chromium alloy, ensure superior heat transfer and enhanced service life. Select DaToo Fish Tank Heater, Let it serve your fish forever.
BPA Free And Energy Saving - Every plastic component of the DaToo Fish Tank Heater is made with durable, high-quality, BPA-free plastic. The process of heating does not produce invisible toxins. This means it is safe not only for your fishes, but for you as well. Stepwise heating mode, it will automatically turn on and off to keep your set temperature, reduce electricity consumption. Select DaToo Aquarium Heater, not only care about your fish, but also save electricity fee for you.
Attention - This is 50W DaToo Fish Tank Heater, 8.7inch, fit 5 to 15 gallons tank with hoods or glass canopies and keep the water flowing. Please make sure that the heater is completely submerged in the water when using it. (Very important). One Year Warranty and 100% Money-back Guarantee. Select DaToo Products= Own A Private Aquarium Housekeeper.
6. Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
Feature
[PREMIUM SHATTERPROOF GLASS]Made of shatterproof glass and BPA-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.3 FREE artificial aquarium plants as ornament in your tank.[NO LONGER CHILL YOUR FISH]Automatically regulate and maintain water temperatureimitate the original ecological environment for your tropical fish.Provided fish with warm water environment.Perfect to apply to fresh and salt water.
[ADJUSTABLE TEMPERATURE]Temperature range: 68F~93F.25W heater:suitable for fish tank within 7 gallons,Length:7.8".Easy to adjust temperature by the aquarium heater that suit more species of fish.
[AUTOMATIC CONSTANT TEMPERATURE]When water temperature reaches set value,the indicator light will be OFF and the heater will automatically stop heating.The heater will automatically start heating and indicator light will be ON if water temperature is low.You could place heater horizontally or vertically.
[ATTENTION]Please place the heater near place (filter or pump) of water flowing to keep more even water temperature.Unplug the heater 30 minutes early when changing the water for the fish tank.
7. DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
Feature
25W Betta Aquarium Heater: Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fishPrecise And Constant Temperature: No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78, the heater starts to heat and the red light is on. When the temperature reaches 78, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
The Smallest 25W Betta Heater: For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. Very MINI!!
Safe And Durable: Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
One Year Warranty & Satisfaction Guarantee: This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!
8. PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks (Preset Temperature 78)
Feature
Betta HeaterThis Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.Quick and Easy Installation:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78, no need to adjust temperature, easy to operate, fishes happy.
How it Works: Plug in, red light turns on, the heater will start working until water temperature up to 78F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78F. Accuracy3F
Note: Do not operate or leave product plugged in when your water tank is out of water, heater should be fully submerged into water. It is better to install a water pump to help water circulating while heating.
SATISFACTION GUARANTEEDOur Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that youre not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
9. Submersible Aquarium Heater, 800W/1200W fish tank heater, double tube heating, rapid heating and energy saving, LED digital temperature controller, suitable for sea water and fresh water(1200W)
Feature
SAFE AND DURABLE The aquarium heater uses explosion-proof quartz tube, high temperature resistant environmental protection ABS plastic protective cover, high-definition LED digital display controller and high-quality power cord, which is safe and more durable for your fish tankEXTERNAL SMART THERMOSTAT The controller uses PID smart chips, fast heating, high efficiency and energy saving, intelligently maintains constant temperature, and can accurately control the temperature within 1F
POWER-OFF MEMORY FUNCTION When it recovers after a power failure, without any operation, the heater will automatically restore to the temperature setting before the power-off, saving you the trouble of resetting the temperature
PRODUCT FEATURES (1) The heater has automatic power-off protection function when it leaves the water surface. (2) Automatic fault detection, flashing prompt. (3) LED digital display, the fish tank temperature is clear at a glance. (4) Constant temperature protection to prevent cooking fish. (5) Adopt frequency conversion heating technology to save energy and electricity
APPLICABLE FISH TANK SIZEThe suitable range of this fish tank heater: 800W (100-210gal) 1200W (150-300gal), this heater is suitable for seawater fish tanks and freshwater fish tanks
10. YukiHalu Small Submersible Aquarium Heater, Mini Fish Tank Heater 25W 50W 100W with Built-in Thermometer, External Temperature Controller, LED Display, Used for 5/10/20 Gallons (25 Watts)
Feature
Super Mini Size, 25Watt for 1-5 Gallons YukiHalu 25W aquarium heater is designed for 1-5 gallons mini fish tank. Compact design, take less space in the fish tank, easy to hide in the tank. Temperature can be accurately adjusted from 64 to 93F. This heater suitable for both saltwater and freshwater. The rated voltage is 100-130V.Automatic Constant Temperature with 1AccuracyThanks to advanced Intelligent Frequency Conversion Technology, the water temperature can be kept constant with an accuracy of 1. The heater's working frequency will be changed according to temperature variation, and the heating is automatically stopped when the set temperature is reached. Compare to traditional heater, this new technology will cut down 49% electricity bill for you.
Overheating Protection, Out of Water ProtectionThe power will be cut off and stop heating automatically if the heater out of water or overheating. Protect your fish. Never cook your fish. 30days full refund, 12-months warranty.
External Temperature Controller, Never Wet Your HandsUse an external controller to set the temperature instead of immersing your hands in water to rotate the dial. Never wet your hands or contaminating your tank. Strong suction cups, easy to install.
Built-in Thermometer, Power-off Memory FunctionDual built-in temperature sensor, the water temperature will be displayed on the external temperature controller in real time. No need to buy other aquarium thermometer. The heater will remember the temperature setting, no need to reset the temperature after power off.
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