Best ADJUSTABLE AQUARIUM HEATERS
At Aquarium Accessories Reviews, we take pride in our rigorous review process. Each product is handpicked based on market research, personally tested by our experienced team for functionality and durability, and evaluated for value for money. Alongside our hands-on experience, we also consider real user feedback. This meticulous approach ensures we provide honest, transparent, and comprehensive reviews to guide your aquarium accessory purchases.
1
Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon
Tetra Store
4.4 ✓
2
Fluval E200 Advanced Electronic Heater, 100-Watt Heater for Aquariums up to 65 Gal., A773,Black
Fluval Store
4.5 ✓
3
Penn-Plax Cascade Heat Aquarium Heater – Fully Submersible – Great for Freshwater and Saltwater Fish Tanks – 7.5” Length – 25 Watt
Penn-Plax Store
4.2 ✓
4
Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank (100W for 10-30 Gallon)
HITOP-Fish Store
4.5 ✓
5
Uniclife Aquarium Heater 25W/50W/100W/200W Adjustable Submersible Heating Rod with Electronic Thermostat LED Indicator Light and Thermometer Sticker for Freshwater Marine Fish Tanks
Uniclife Store
4.5 ✓
6
hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W Submersible Fish Heater for 60-120 Gallon Freshwater Tank
hygger Store
4.2 ✓
7
FREESEA 25 Watt Aquarium Betta Fish Tank Heater with Aquarium Submersible Thermometer
FREESEA Store
4.2 ✓
8
Hygger Mini Glass Aquarium Heater Adjustable LED Digital Temperature Display Small Tank Heater for Turtle Betta Fish Bowl with Protective Guard 50W
hygger Store
4.2 ✓
9
Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
Brand: Bnzaq
4.4 ✓
10
FREESEA Aquarium Fish Tank Heater: 50 Watt Submersible Betta Heater - Adjustable Thermostat with Thermometer for 5-15 Gallon Marine | Saltwater | Freshwater
FREESEA Store
4.1 ✓
We will continue to update this buyer's guide once a month or two.
The best ADJUSTABLE AQUARIUM HEATERS in 2024 - Detailed Product Descriptions
1. Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon
By Tetra Store
More PhotoAll 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 décor.
Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
2. Fluval E200 Advanced Electronic Heater, 100-Watt Heater for Aquariums up to 65 Gal., A773,Black
By Fluval Store
Aquarium heater with dual temperature sensors provide accurate and real-time water temperatures
LCD temperature display available in both Fahrenheit and Celsius; with a range of 68 to 93 degrees Fahrenheit
Fast heat technology built with a safety shut-off and integrated fish guard to protect fish and invertebrates
Equipped with a slim profile mounting bracket and colored display alert system
200-watt heater for freshwater and saltwater aquariums up to 65 gallons with a 5-year warranty
3. Penn-Plax Cascade Heat Aquarium Heater – Fully Submersible – Great for Freshwater and Saltwater Fish Tanks – 7.5” Length – 25 Watt
FULLY SUBMERSIBLE AQUARIUM HEATER: The 25W Cascade Aquarium Heater easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. The 25W model works great for fish tanks up to 5 gallons.
VISIBLE & ACCURATE TEMPERATURE SCALE: With an easy to read setting scale in both Celsius and Fahrenheit, it’s easy to see the temperature adjustments being made. To increase the temperature, rotate the control knob counter-clockwise, and to decrease, rotate it clockwise; or, follow the + and – symbols located near the control knob.
ORANGE PILOT LIGHT: Our Cascade Heat Aquarium Heaters feature a pilot light that indicates the heating cycle status. This means that it will go on and off by itself as the thermostat cycles the heating element on and off. In other words, orange light = heater is on. Similarly, these aquarium heaters make a faint click when turning off.
ADDITIONAL FEATURES: In addition to being composed of heavy-duty and shock-resistant glass, these fully submersible aquarium heaters can be placed either horizontally or vertically. There’s also a built-in minimum water level indicator at the top, colored in red.
MEASUREMENTS: Overall Length = 7.5” / Overall Diameter = 1.1” / Suction Cup Diameter = 1.25” / Wattage = 25W / Voltage = 110V
4. Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank (100W for 10-30 Gallon)
Explosion Proof: The aquarium heater is made of 2mm thickened quartz glass, 33% thicker than ordinary glass, explosion-proof, not easy to crack, which is very safe for people and aquatic animals.
Application: 100W water heater is suitable for 10–30 gallon tank, also suitable for both saltwater and freshwater, suitable for fish tanks and turtle tanks, must be completely submerged in water when using.
Accurate Temperature: The fish tank heater can be adjusted from 68°F to 93°F (20°C - 34°C), comes with a thermometer sticker, convenient to detect the water temperature without another pay.
Long Service Life: This fish heater adopts 8-slot multi-branched heating wire ceramic frame, shorter length, 9.5*1*1 in(24*2.5*2.5 cm), better heat dissipation, and can save more space for your fishes.
Complete Accessories and Warranty: This aquarium submersible heater comes with accessories you need, in addition to the thermometer, it comes with 3 suction cups, one for replacement, and offer 12 months warranty, giving you peace of mind after your purchase.
5. Uniclife Aquarium Heater 25W/50W/100W/200W Adjustable Submersible Heating Rod with Electronic Thermostat LED Indicator Light and Thermometer Sticker for Freshwater Marine Fish Tanks
For 5-10 Gal Tanks: Measure 8.3 inches in length. Applicable for aquaculture and fresh, marine and tropical aquariums. Save your fish or plants from coldness to keep them vigorous.
Adjustable: Controllable temperature range from 68 °F to 93 °F (20-34 °C). Simply rotate the knob to freely regulate the temperature with deviations from ± 2 °F to ± 4 °F.
Detect Temp Timely: With a built-in thermostat, it will automatically keep the water at the set temperature. The extra thermometer sticker allows you to detect water temp at any time.
Heating Protection: Its indicator light turns red during working and automatically shuts off to stop heating when reaching the set temperature. No danger of overheating to your aquatics.
Reliable Material: The 2 mm extra thick shatterproof quartz glass can prevent electricity leakage. And the iron-chromium heating wires feature fast heating to warm your tank fitly.
6. hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W Submersible Fish Heater for 60-120 Gallon Freshwater Tank
By hygger Store
This fully submersible aquarium heater enables memory function and over heat protection. Auto shut off when over-heats, resets when it cools down
Made with premium titanium and double sealed by black protective guard, this fish tank heater is resistant to explosion, and protect fish and other livestocks from punching and scalding
Build-in external IC temp controller, easy to read LED digital number shows real time water temperature. Temp accuracy is +/- 1°F.
Easy to set temperature without getting hands wet. Build in hand button, Keep pushing the button. It will cycle through all the set temperatures. Temperature can be precisely adjusted from 70 to 94°F
500 watt aquarium heater, voltage 110-120V, suitable for tank capactiy 60-120 gallon freshwater aquariums and turtle tanks
7. FREESEA 25 Watt Aquarium Betta Fish Tank Heater with Aquarium Submersible Thermometer
★【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】: 63°F~95°F , 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 you’re 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.
8. Hygger Mini Glass Aquarium Heater Adjustable LED Digital Temperature Display Small Tank Heater for Turtle Betta Fish Bowl with Protective Guard 50W
By hygger Store
【Run Dry Protection】This egg-shaped small aquarium heater automatically shut itself off once it come out of water which ensures the safety of your pet, especially turtle and frog
【Protective Guard】Made of high quality quartz glass, waterproof double seal material, covered with protective case, shatter-resistant construction, this fish tank heater keep your fish from scalding and punching
【Digital LED Display】External temperature setting control avoids getting hands wet, digital LED display shows real time water temperature. Heating temperature range from 63 to 94°F. Control accuracy is +/- 1°F.
【Automated Shut Off System】Once you set the desired degree of heat, this fully submersible heater lights on red and begin to heating. It will auto shut off once it reach set temperature
【For Fish Tank 1-6.5 Gallon】50 watt aquarium heater is ideal for small fish bowls and aquariums 1 to 6.5 gallons; voltage/frequency: 110 120volt/60hertz; it is ideal for betta fish and turtle tank
9. Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
By Brand: Bnzaq
[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 temperature，imitate 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: 68°F~93°F.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.
10. FREESEA Aquarium Fish Tank Heater: 50 Watt Submersible Betta Heater - Adjustable Thermostat with Thermometer for 5-15 Gallon Marine | Saltwater | Freshwater
【50 Watt Aquarium Heater】This fish tank heater is suitable for 5-15 gallons tanks. Voltage 110-120V. Power cord length is 4ft. With 2 strong suction cups, it's easy to install it on glass, acrylic and plastic tank. Great for freshwater and saltwater aquariums.
【Adjustable Temperature】Just turn the knob on top of the tank heater and you can easily get the temperature you want (From 64℉ to 93℉). The fish heater comes with a submersible thermometer, so it's convenient to check or adjust the temperature in real-time.
【Automatic Constant Temperature】With the intelligent temperature control system, it can make us keep fish more easily. No need to worry about overheating situation. When the water temperature is lower than the set value, the heater starts heating and the indicator light is on. When the water temperature reaches the set temperature, the heater stops heating and the indicator light goes off to keep the constant temperature.
【Sturdy and Durable】FREESEA submersible heaters are made of 2mm thickened quartz glass material, which is resistant to breakage, corrosion and abrasion. With high temperature resistant nichrome wire, the water heats up faster and longer service life.
【Satisfaction guaranteed】Our aquarium heaters are made with durability and safety in mind for each design. If you have any questions, please feel free to contact us! We will gladly offer a prompt, courteous refund or a new replacement. 12 Month Warranty and 24 Hours Professional After-sales Service.
11. hygger ETL Certification Aquarium Heater, 50W/100W/200W/300W Submersible Fish Tank Thermostat Heater with Adjust Knob Suction Cup for Small Betta Coral Saltwater and Freshwater
By hygger Store
TEMP SETTING GUIDELINE: DO: Rotate left and right to adjust the temperature, easy to adjust, the range is 68℉~93℉. SEE: temperature scale setting guide bar. Working indicator light, plug in the power, the working state is more intuitive.
SAFETY CERTIFICATE: ETL Certification, hygger provide the most effective guarantee for your fish tank. Thickened Quartz Protective Glass; Bottom Protective Cover; Stable Suction Cup; Double Seal; Precision Welding; No Leakage Of Insulation;
WORKING PRINCIPLE: The hygger THERMOSTAT HEATER stops when the surrounding water temperature reaches the set temp, and starts to work when the surrounding water temp is low, and it cycles over and over again to achieve equilibrium. It is not a traditional heater that has been heated all the time.
PRODUCT PARAMETER: Cord Length: 5.9ft; Voltage:120V AC 60Hz; Watts:50W/100W/200W/300W; the temperature range is 68℉~93℉; Can be used in various tanks, coral saltwater, and small betta freshwater tanks.
QUALITY GUARANTEE: 2mm thick glass tube, heat conduction is more even, anti-collision, explosion-proof and corrosion-resistant, dual-purpose for betta freshwater and saltwater. The high-efficiency heating wires have a large area and are arranged tightly to increase the heating area and transfer the heat evenly.
12. YOFOTHS Aquarium Heater 25W/50W/100W/200W, Small Fish Tank Heater, Temperature Adjustable Mini Tank Heater for 1/5/10/20/30/40 Gallon, External Temperature Controller (25W(1-5Gallon))
25W:【25Watts Small Fish Tank Heater】 This Aquarium Heater is suitable for 1-5 gallons tanks, Mini size can well fit your mini tanks. Voltage 110-120V, power cord length is 52”, Suitable for freshwater and saltwater. Meet the growth temperature for turtle, Fighting fish,Guppy, Goldfish, Neon Tetra, Gourami, Peaceful Betta, Pterophyllum, Dwarf Gourami, Pterophyllum Scalare, Betta Smaragdina, Koi, Corydoras, Anabantoidei, Paradise Fish, Clownfish,swordtail….
【Precise and Constant Temperature】An intelligent IC chip controls the heater’s temperature. The temperature accuracy is 1℉. The fish heater will automatically start heating when the water temperature is lower than the set values and stop heating when the water temperature reaches the target.
【External Temperature Controller】Adjust the temperature from 64℉ to 93℉, This submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe for you to set the temperature, No need to put your hands in the water to adjust the Aquarium Heater temperature.
【Prevent for Over Heating and Out of Water Protection】 The heater will cut off power and stop heating automatically when the fish tank heater is out of water or the water temperature is over 95F. ‘E1’ error code will be shown. The function recovered when the heater is 100% immersed in water or the water temperature goes down to below 93℉.
【Notice】During its heating time, heater must be 100% immersed into the water. Please unplug the power supply when cleaning the fish tank or aquarium water changes. Heater rod is suitable for people over 16 years of age. Children or minors should be under adult guidance or supervision to use.
13. HITOP PTC Adjustable Aquarium Heater, Sturdy Fish Tank Heater with Protective Cover, 100W/200W/300W/400W Heater for Fresh/Saltwater Fish/Turtle Tank up to 120 Gallon
By HITOP Store
HITOP 400W PTC ceramics aquarium heater, really Shatterproof, suitable for 80-120gallon fish tanks and turtle tanks. With 3 powerful suction cups and a sticker thermometer, which can help you observe the water temperature at all times.
[Mechanical adjustment] Compared with electronically adjustment aquarium heaters, it has superior stability. Classic products tested by the market, will not overheat, do not cook fish, and can keep the water temperature stable for a long time.
[Easy to use] After the temperature setting is completed, there is no need to adjust too much, you can even forget this fish tank heater, it will automatically turn on and off according to the water temperature. Therefore, even if the adjustment knob is in the fish tank, it will not cause too much inconvenience.
[Ceramic PTC heating element] It has the advantages of high heating efficiency, long service life and energy saving, and is an excellent heating material for aquarium heater. It is also effective against corrosion and can be used in sea water.
[The protective cover is detachable] After long-term use, some dirt may adhere to the inside of the fish heater, which will affect the heating effect. The shell of this heater can be easily removed and installed, which is convenient for you to clean the heating element inside. We provide 12 months warranty service.
14. DaToo Submersible 50W Aquarium Heater Adjustable Fish Tank Heater 50 Watt
By Brand: DaToo
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 want（68 to 93°F) 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.
15. YukiHalu USB Powered Aquarium Heater, 10W/20W/30W Adjustable Mini Fish Tank Heater with External Temperature Controller, LED Display, Used for 0.5-1 Gallon Tank (10W USB)
【Super Mini Size, 10Watt, below 1 Gallon】YukiHalu 10W aquarium heater is designed for the mini fish tanks less than 1 gallon. Compact design, take less space in the fish tank, easy to hide in the tank. Temperature can be accurately adjusted from 64 to 93°F. The rated voltage DC 5V/2A. Important tips: insufficient power of the adapter will cause no heating and the number will flash or the controller restarts repeatedly, make sure the power adapter is 5V 2A and has enough power.
【Automatic Constant Temperature with 1℉ Accuracy】Thanks 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 & DC 5V USB supply】The power will be cut off and stop heating automatically if the heater overheating. Protect your fish. Never cook your fish. USB 5V power supply, prevent electric shock. 30days full refund, 12-months warranty.
【External Temperature Controller, Never Wet Your Hands】Use 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. Easy to install.
【Built-in Temperature sensor, Power-off Memory Function】Dual built-in temperature sensor, the water temperature will be displayed on the external temperature controller in real time. No need to buy other temperature meters. The heater will remember the temperature setting, no need to reset the temperature after power off.
16. YOFOTHS Adjustable Mini Aquarium Heater 0.5/1/2/3 Gallon Submersible Small Fish Tank Heater 10W/20W/30W Digital Display External Temperature Controller (USB-10W)
SMALL AND POWERFUL: This mini aquarium heater is about 2 "long, and is super small. It is specially designed for small fish tanks and does not occupy any space. Upgrade the chip to make the temperature sensing more sensitive and the temperature rise more accurate.
INTELLIGENT MEMORY FUNCTION: After setting the target temperature, the power is suddenly turned off, and the target temperature remains unchanged after turning on the power again.
OVERHEATING PROTECTION: Built-in temperature sensor, temperature range 64-93°F. If the water temperature exceeds 95°F, the error code "HI" appears, the heater stops working, and when it returns to below 95°F, the error code disappears and it starts working again.
EXTERNAL CONTROLLER: External temperature controller, no need to get your hands wet, no need to buy other controllers, 52 inch long power cord, easy to install, easy to control.
WIDELY USED: Suitable for freshwater and saltwater. Meet the growth temperature for turtle, Fighting fish,Guppy, Goldfish, Neon Tetra, Gourami, Peaceful Betta, Pterophyllum, Dwarf Gourami, Pterophyllum Scalare, Betta Smaragdina, Koi, Corydoras, Anabantoidei, Paradise Fish, Clownfish,swordtail...
17. AquaMiracle Adjustable 50W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 5-10 Gallons
SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market. It is only a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F.
ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled fish heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate.
DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”!
MEMORY FUNCTION – The last setting is stored in the chips of the thermostat. In case of a power cut, when the power recovers the fish tank heater will follow the last setting.
MULTIPLE USES – This fish tank heater can be used for both fresh and marine water. It can be not only used as an aquarium heater, but can also work a turtle heater, pet fountain heater, and plant seedling heater.
18. Kulife Fumak 100W Adjustable Aquarium Heater Super Short Submersible Fish Tank Heater Fish Heater with LED Digital Display Thermostat, for Tanks 10-20 Gallons
SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market! It is only a bit more than HALF of the length of the traditional aquarium heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F. 100 Watt for 10 - 20 Gallon tanks.
SUPER ACCURATE 1F – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the fish heater at a constant temperature at an accuracy of 1F much more accurate than the traditional knob-controlled fish heaters and you save your electricity expenses by 50%!
DIGITAL DISPLAY WITH DOUBLE TEMP. READINGS – This fish tank heater comes with an external thermostat with digital display that shows 2 readings – the current temperature and the set temperature – very easy to switch by pressing the SET button and you save an extra thermometer for current temperature measuring.
DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from ''cooking fish!
MEMORY FUNCTION – The last setting is stored in the chips of the thermostat. In case of a power cut, when the power recovers the fish heater will follow the last setting.
EXTERNAL TEMP. SETTING, NEVER WET YOUR HANDS – With the external thermostat you are away from getting your hands wet like you are doing with the traditional knob-controlled fish tank heaters to set the temperature.
MULTIPLE USES – This fish tank heater can be used for both fresh and marine water. It can not only be used as an aquarium heater, but can also work as a turtle heater, pet fountain heater, and plant seedling heater.
Water Resistance Level : waterproof
19. Kulife Fumak Super Mini Aquarium Heater 10W Betta Heater Small Aquarium Heater Adjustable Submersible Fish Tank Heater Turtle Heater with Digital Display Thermostat, for 1-2 Gallon Tanks
SUPER MINI SIZE – This small aquarium heater is “thumb size” - only 2.36” (6cm) in length. Great for nano tanks / betta tanks. The innovative super mini size perfectly solves the headache of the fish keepers on the traditional heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F, for 1-2 Gallon tanks.
ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips this thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate.
DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level or when the water temperature exceeds 97F. You are free from “cooking fish”!
MEMORY FUNCTION – The last setting is stored in the thermostat. In case of a power cut, when the power recovers the heater will follow the last setting.
MULTIPLE USES – This heater can be used for both fresh and marine water. It can be not only used as an aquarium heater, but can also work for turtles, pet fountains, and plant seedling.
20. YukiHalu Submersible Aquarium Heater 100/150/200/300W, Small Size, Overheating Protection, External Temperature Controller, LED Display, Used for 20/30/40/60 Gallons (100Watts)
【100Watt for 10-20 gallons】YukiHalu 100W aquarium heater is designed for 10-20 gallons fish tank. Temperature can be accurately adjusted from 64 to 93°F. This heater works well in both saltwater and freshwater. Rated voltage 100-130V.
【Compact size】only 13cm/5 inches length for 100W and 150W heater, 19cm/7.5 inches for 200W heater and 23cm/9 inches for 300W heater. Fits mini fish tank, it takes up less space and easy to hide in the tank. Easy to install
【Automatic thermostat at 1°F accuracy】The heater's working frequency will be changed according to temperature variation based on Intelligent Frequency Conversion Technology, and the heating is automatically stopped when the set temperature is reached.
【Overheating and lack of water protection】Stop heating automatically if the fish tank lack of water or overheating. Never cook your fish.
【External temperature controller】The temperature can be set by external controller, and the water temperature value is displayed on the LED display without the need for an additional aquarium temperature meter. The heater will remember the temperature setting, no need to reset the temperature after power off.
21. auomii Small Submersible Aquarium Heater,Adjustable Mini Fish Tank Heater 25/50/100/150/200/300 Watts with External Temperature Controller, LED Display, Smart Memory, Used for 1-60 Gallons
【Automatic constant temperature, for 1-60 gallon tank】auomii aquarium heater is specially designed for mini fish tank for 1-60 gallon. The heating will be automatically stopped when the set temperature is reached. The rated voltage is 100-130V. Choose the right power of heater according to size chart.
【Easy to adjust, external temperature controller】Set the temperature via an external controller instead of submerging the hands in water and turning the dial. Avoid getting your hands wet or contaminating the tank. The temperature can be adjusted from 64 to 93°F with 1℉ accuracy because of Intelligent Frequency Conversion Technology
【Easy to install, ultra-small size heater】Thanks to the ultra-compact heater with powerful suction cup, it can be easily installed anywhere in the tank. This super small heater can be used for both saltwater and freshwater.
【Easy to read, thermometer inside】The water temperature will be displayed on the external controller in real time. No need another aquarium thermometer. Dual temperature sensors make temperature measurement more accurate.
【Safety, overheating protection】Prevent cooking fish as overheating protection. Stop heating automatically when overheating or lack of water. 30 days full refund, 12-months warranty.
22. FREESEA Aquarium Fish Tank Heater: 75 Watt Mini Submersible Water Heater with Digital Temperature Display - Adjustable External Controller for Betta | Turtle | Goldfish | 5-15 Gallon
FREESEA Aquarium Heater: 75w betta fish heater, voltage: 110~120V, is suitable for use in 5-15 gal betta fish turtle tanks and aquariums. The power cord is 5ft, long enough for indoor use
Double Safety Protection: When the top part of the turtle tank heater is out of water it will auto shut off. When the actual water temperature is higher than 94°F, it will auto activate the overheating protection and stop heating
External Controller: The betta fish heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient to adjust temperature that range from 63℉ to 94℉
LED Temperature Display: Digital led temperature display shows the real-time temperature and error code on the screen. When the mini aquarium heater is heating, there indicator light above the digit is on red
12-month Warranty: We are committed to providing high quality products and better service with a 12-month warranty. If you have any questions about the turtle heater you receive, please feel free to contact us
23. hygger Small Submersible Aquarium Heater 15W Mini Betta Fish Tank Heater with Thermostat for 1-2.5 Gallon Saltwater Freshwater
By hygger Store
Safe Rugged Construction -- Built in shatterproof QUARTZ tube wrapped with two heating element mica plate and nickel wire, along with high-impact plastic housing, hygger submersible Aquarium Heater ensures the safety of your pets while maintaining proper temperature.
At-A-Glance Temperature Display -- heater rod shows real time water temperature and indicator light. It will be red when heating, green light when the proper temperature has been reached.
External Knob Controller Memory Function -- allows you quick set temperature without getting hands wet especially in winter, adjustable wide temperature range of 59°F to 93°F in 1-degree increments. Memories last setting when you unplug it to water change.
Out of Water Shut Off Protection -- feature to ensure it doesn’t overheat and cause harm to your livestock. Turn off before it exceeds desired temperature. Shatterproof plastic guard protects fish/turtle from impact and making contact, easy to detach to cleaning
Great For Small, Shallow Tank -- slim flat profile mini tank heater measures 4.3''x 1.8''x 0.9'', which is quiet space saving and easy to hide behind filter/wood/rock with two strong suction cups mount. Thanks to the flat design, it can be placed vertically or horizontally at gravel free aquarium bottom to heat up low water level turtle tank.
24. hygger Small Aquarium Betta Heater, Submersible Fish Tahk Heater 10W/25W/50W/100W with LED Digital Display, Suitable for Marine Saltwater and Freshwater up to 5/10/16/26 Gallon
By hygger Store
★10 Watt Aquarium Heater: Temperature range is 59-93F, for small glass or acrylic aquariums up 1 to 5 gallons, can be used for both fresh and marine water, ideal for fish tanks and turtle tanks. Please choose the right wattage aquarium heater according to our size chart
★Made with Premium Quartz: The aquarium heater is made of 2mm thickened quartz glass. This fish tank heater is resistant to explosion and corrosion, and protect fish and other livestocks from punching and scalding
★Dry Run / Overheating Protection: When the water temperature exceeds 95°F or when the warer level is lower than the minimum water level, the heater will stop heating, and the conrtoller will display an error code. Error code: HH-high temp; E1-out off water. Multiple protection, you are free from “cooking fish”!
★Super Mini Size: This small aquarium heater is “thumb size” - only 4.1” (10.5cm) in length. Great for nano tanks / betta tanks. The innovative super mini size perfectly solves the headache of the fish keepers on the traditional heaters! Takes up less space, easy to hide, but in full power!
★LED Digital Display & External Temperature Controller: LED digital display can observe the water temperature in real time; the temperature remote control allows you to avoid wet hands when adjusting the temperature. Note: Please unplug the power when cleaning the fish tank or changing the water in the aquarium.
25. USB Adjustable 10W Mini Aquarium Heater Submersible Fish Tank Heater,Small Fish Tank Heater with LED Digital Display Thermostat, Betta Heater Turtle Heater for 1-2 Gallon Tanks
MINI SIZE: This aquarium heater is super mini size, only 5cm in length, perfect for nano/betta tanks. The innovative super short size can perfectly solve the problem of traditional heater not suitable size. Temperature control range 64-93℉, suitable for 1-2 gallon fish tank.
OVERHEATING PROTECTION: When the water temperature exceeds 97℉, this fish tank heater will stop heating automatically and display" H1",Fully consider of safety，You are free from “cooking fish”!
Wide range of uses - This fish tank heater can be used for both fresh and marine water, it can be not only used as an aquarium heater, but also as a turtle heater, pet fountain heater.
Running dry protection : Auto shut off heating and show "E1" when the aquarium heater is removed from the water, and resume functioning upon return.
Built-in thermostat for accurate temperature: This thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than traditional knob controlled heaters.
26. Dreyoo 2 Set Aquarium Fish Tank Heater, 300W Submersible Aquarium Heater with Thermometers and 4 Suckers, Adjustable Knob Aquarium Water Heater Built in Thermostat for 40-55 Gallon Aquariums
By Dreyoo Store
300W Aquarium Heater: suit for 40 to 55 gallon aquariums, the tank heater is 11" in length, 110-120V and 5 feet plug cable, the package comes with 2 pack fish tank heaters, 2 aquarium thermometers and several suckers
Adjustable Temperature: aquarium submersible heater has an exact temperature scale of 68 to 93 °F, complete control of the water climate within 1 degree of difference; Sensitive and reliable thermostat maintains uniform temperature, when red light on is heating, and automatic shutdown when temperature is reached
With 2 Aquarium Thermometers: the immersion probe with suction cup can be easily put into the water, allowing you to better observe the temperature of the fish tank; Immersion probe only, do not immerse the thermometer in water
Distinct Design: the aquarium water heater uses 2 mm thickened quartz glass, can be applied in fresh-water and saltwater aquariums, easy to hide in the tank, which is not easy to crack and safe for people and water animals
Note: the fish aquarium heater need to adjust temperature firstly, and then fix suction cup, and the heater must be completely immersed in the water, finally powered on; Also, if you want to clean tank water heater, and you should wait the heater to cool before removing it
27. hygger 100W Aquarium Heater, Ultra Short Quartz Fish Tank Heater with LED Digital Display Thermostat Controller for 5-26 Gallon Freshwater Saltwater Tank
By hygger Store
【Explosion-proof and anti-corrosion aquarium heater】Heating rod heating body is made of explosion-proof quartz glass, nickel-chromium heating wire and silicon carbide heat-conducting material, and the fish heater shield is made of high-temperature resistant ABS material. Manufactured into a tank heater that is anti-corrosion, non-leakage, non-conductive, explosion-proof, and makes water heating faster.
【Safety Guarantee】This full immersion aquarium heater build-in two temperature probe, when the fish heater is out of water or over temperature, it will automatically stop heating and send out a warning signal L1 or HH. And the heating rod will restart after it is completely submerged in water or cooled Work.
【INTELLIGENT THERMOSTAT】 When the actual temp is lower than the set temp of the fish tank heater by 1.5°F/1.5°C, the indicator light will turn red, the fish tank heater will heat up to the set temp at full power, and the indicator light will turn blue color, then stop heating.Temperature Ranging from 59℉ to 93℉.
【External Smart HD Controller】External controller with LED digital display, without getting hands wet. Each press of the submersible heater will change the set temperature by 1℉(1℃). Press and hold it for 5 seconds to toggle between Celsius and Fahrenheit.
【Full Submersible Heater】100w aquarium heater is suitable for 5-26Gal fish tank freshwater and saltwater tanks. Memory function it remembers the temperature you set it when the power fails. THREE suction cup bracket, can stably fix the heater in every corner of the fish tank.e changing water or removing heater. Make sure the heating rod is completely submerged in water and there is enough water flow and water circulation in fish tank when using the heater
28. Uniclife Aquarium Heater for 5-20 Gallon Fish Tanks 50 W Submersible Adjustable Heating Rod with Electronic Thermostat Thermometer Sticker Protective Cover for Freshwater and Marine Aquariums
Submersible Heater: Applicable for 5-20 gallon aquaculture and fresh, marine and tropical aquariums. Save your fish or plants from coldness to keep them vigorous. Fix it on the tank wall with 2 adjustable suction cups.
Adjustable Temperature: Controllable temperature range from 68 °F to 93 °F (20-34 °C). Simply rotate the knob to freely regulate the temperature with slight deviations of ±3 °F.
Strong Protection: Its indicator light turns red during working and automatically shuts off when reaching the set temp. Come with a protective cover which always keeps the fish out. No danger of overheating to your aquatics.
Shatterproof & Long-lasting: Made of 2 mm extra thick quartz glass, it can effectively prevent electric leakage. And the iron-chromium heating wires feature fast heating to warm your tank fitly.
Detect Temp Timely: With a built-in thermostat, it will automatically keep the water at the set temperature. The extra thermometer sticker allows you to detect water temp at any time.
29. Nobiqfoq Fish Tank Aquarium Heater - Submersible Thermostat Adjustable Temperature Heater for Saltwater & Freshwater 50W
【EXPLOSION PROOF】Made of thickened quartz glass and not easy to crack.Fully submersible and safe for fish without any toxic substance producing.
【ADJUSTABLE TEMPERATURE】Set the temperature from 68°F to 93°F as you desired.Easy to adjust temperature that suits more species of fish.50W heater is suitable for 5~15 gallons fish tank,heater length - 7.9 inches.Please choose the heater according to our chart.
【SMART TEMPERATURE SENSING】Automatically regulate and maintain water temperature，imitate the original ecological environment for your fish.Suitable for both fresh and salt water.
【AUTOMATIC ON&OFF】When water temperature reaches preset temperature,the heater will automatically stop heating(OFF Light).The heater will automatically start heating again (ON Light) if water temperature is lower than the preset temperature.
【NOTE】Keep 100% submerged into the water.Unplug the power supply when cleaning the fish tank or changing aquarium water.Place the heater near by filter or pump to keep more even water temperature.The heater can be placed horizontally or vertically.
30. hygger 300W Submersible Aquarium Heater with Digital Controller, Auto Shut Off Fish Tank Heater for 40-65 Gallon Freshwater/Saltwater Reef Tank
By hygger Store
[Safety Auto Off, No Cooked Fish] If the water level drops too low and exposes the temperature sensor to the air, hygger aquarium heater auto shuts off with controller flashing "E1" error code and beeping alert to prevent overheating
[Multi-Functional External Controller] 1. Easy to read digital display shows both real-time water temperature and set temperature which available in either Celsius or Fahrenheit. 2. Red indicator light let you know its heating and green at temperature. 3. Audio alert remind you something is wrong. 4. Easy to set temperature without getting hands wet
[Corrosion-Resistant Quartz with Protective Guard] hygger 300/500w aquarium heaters equipped with single heater tube in which made of premium corrosion resistant and shatter-proof quartz glass, suitable for fresh or marine water; Integrated protective guard protect fish and other livestocks from burning
[Alarm for High and Low Temperature] Auto shut off as well as beeping alarm when water temperature lower than 59°F or higher than 95°F, resets when water temperature back to control temperature range between 59°F~93°F
[Choose the Right Heater According to Tank's Size]voltage 110V, 300 watt aquarium heater for 40-65 gallon tank, 500 watt aquarium heater for 66-132 gallon tank, 800 watt aquarium heater for 106-211 gallon tank, 1000w aquarium heater for 159-317 gallon tank, suitable for fresh water and marine water
