Home » 300W Fish Tank Heater – The 16 best products compared

300W Fish Tank Heater – The 16 best products compared

Recommended products regarding the topic “300W Fish Tank Heater”

We have compared products in the section “300W Fish Tank Heater”. Here you can find the top 16 in the category “300W Fish Tank Heater”.

300W Fish Tank Heater – the most important at a glance

{checkliste – 300W Fish Tank Heater}

Bestsellers in “300W Fish Tank Heater”

A list of bestsellers under the category “300W Fish Tank Heater” you can find here. Here you can see which products other users have bought especially often.

Bestseller Nr. 1
Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
  • ★300W aquarium heater is suitable for 40 to 55 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
Bestseller Nr. 2
Hitop 50W/100W/300W Adjustable Aquarium Heater, Submersible Glass Water Heater for 5 – 70 Gallon Fish Tank (300W for 35-70 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: 300W water heater is suitable for 35–70 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, 11*1*1 in(27*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.
Bestseller Nr. 3
Aqueon Submersible Aquarium Heater, 300 Watts, Up to 100 Gallons
  • Fully submersible, auto shut-off when overheats, resets when cools down
  • Electronic thermostat stops heating once set temperature is reached
  • Precise temperature setting adjustable to 1° F (68-88° F)
  • Shatter-resistant
  • LED light turns on when aquarium water is being heated, automatic safety shut off and overheat protection
Bestseller Nr. 4
INKBIRDPLUS 300W Submersible Aquarium Heater Titanium Fish Tank Auto Thermostat with LED Digital Temperature Readout and External Temperature Controller for Salt Water and Fresh Water
  • 🐠🐠【Excellent function Effect】 300-watt aquarium heaters fit for 50-60 gallon large fish tank, keep your big fish tank warm and comfy. double sensing probe on the top make sure its accuracy when detecting the temperature and water volume.
  • 🎁🎁【Perfect Partner-Strong material advantages】The INKBIRDPLUS heater is made of titanium tube material, which has the performance of anti-breaking, anti-explosion, anti-cracking, and anti-corrosion. This heating rod can be applied to salt water and fresh water, and the heating effect is better than other materials.
  • 🍭🍭【External Controller】The controller with the touch button can adjust the temperature at any time and easily understand the water tank's temperature through the LCD. It is easy to operate from 68℉/20°C to 94℉/34°C (please place the controller outside the fish tank).
  • 👍👍【Accurate temperature control】The intelligent IC chip controls the heater temperature so that the temperature difference is within ±1℃/±2ºF; it provides the best living environment for your aquatic organisms and has the functions of overheating protection and water shortage protection. If the set value jumps, it is a normal phenomenon, and it is a critical point. You can check the temperature of the aquarium first. Then contact us to solve the problem.
  • 💙💙【Waterproof grade and Level Certification】The highest waterproof grade is IP68. When the heating rod is working, the rod body needs to be completely immersed in water. The fish tank aquarium heater has obtained CE, FCC, and ROHS certification, and the plug has obtained UL certification; it is suitable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems. With a 1-year warranty, please don't worry about the quality of the heater.
Bestseller Nr. 5
300w 150w 50w Submersible Aquarium Heater Auto Thermostat Heater with Suction,LED Small Mini Temperature Display Aquarium Fish Tank Heater for Fish Tank Water (Bonus Thermometer)
  • UPGRADED MORE DURABLE VERSION: Provided the best warm area to your fish in the cold winter.Keeps improving best aquarium heater for your fish tank, after collecting so many comments from customers, we upgrade its function and life time, now it works more continuously and accurately.
  • MORE SAFETY & HIGH QUALITY: This upgraded aquarium heater now updated for more durable Quartz Glass, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger protective container updated for Anti-melting anti punching double sealed material, it is scald-preventing for your pets and your safety.
  • FREE THERMOMETER: This fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. It provide a constant warm environment for your pet fish to stay healthy, suitable both for fresh and salt water.
  • TEMPERATURE CONTROL: Aquarium heater works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably. Setting the temperature by the red knob on the top with range is 64°F - 94°F.High accuracy(±1°F)
  • APPLICABLE TANK SIZE: Our submersible aquarium heaters are perfect designed for different size tank, 100W for 10-20 gallon; 200w for 20-30 gallon; 300W for 30-50 gallon, 500w for 50-80 gallon;please choose the suitable power for your tank. And we also recommend to position it near a strong water flow, the outlet of a power filter is ideal, so that the whole aquarium are in the same temperature.
Bestseller Nr. 6
HiTauing Aquarium Heater, 50W/100W/200W/300W/500W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater
  • 🐠【Rapid Heating and Two Temperature Control System】300W aquarium heater is sutable for 40-75 gallon fish tank and made of the most stable nickel-chromium heating wire, which can quickly and stably conduct heat to the surroundings. It has a built-in temperature control system of Fahrenheit and Celsius(Temp range: 63-94℉/17-34℃). You can press and hold the button next to the controller for 2-3 seconds to switch.
  • 🐠【Intelligent Water Sensor and Over Temperature Protection】This fish tank heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.
  • 🐠【Explosion-proof Quartz Glass Aquarium Heater】The submersible aquarium heater is made of explosion-proof quartz glass material and a high-temperature resistant nickel-chromium heating wire with silicon carbide heat conduction, faster water heating and longer lasting. And the stronger black shell is a high temperature resistant ABS material which protect the fish, your aquatic organisms and you from scalding.
  • 🐠【Accurate External Digital Display Controller】The external IC temp controller of this aquarium water heater can show the water temp with 2 red LED digits. The temperature in Fahrenheit and Celsius is displayed, which can be switched by pressing and holding the button for a few seconds. To set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again.
  • 🐠【Wide Range of Use】This 300 watt adjustable aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept. There are strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged.
Bestseller Nr. 7
MQ Submersible Aquarium Heater Auto Thermostat, 300W Fish Tank Heater with LCD Digital Aquarium Thermometer, Shatter-Proof and Blast-Proof
  • 【For Fish Tank 30-60 gallon】300W aquarium heater, voltage AC 110-120V, power cord is 5.0ft, please choose the right wattage aquarium heater according to our size chart. Comes with detachable shield and 2 suction cups. It's easy to hide it in the tank (acrylic or glass).
  • TEMP ADJUSTABLE: Temperature can be adjusted between 68-94℉. You can set the temp to one of these values on the dial: 68, 71, 75, 78, 82, 86, 90, 94 by rotating the pointer, which allows for complete control of aquatic climate within a 2-degree difference.
  • SAFETY PROTECTION: Effectively maintain the tank water in the constant temp you set, stop heating when the water temp is 1.5-2℉ above the set temp and restart heating when the water temp is 1.5-2℉ below the set temp.
  • BLAST-PROOF: Made of shock resistant quartz glass, covered with double sealed case, explosion-proof and no electricity leakage, preventing your pets being scalding. Can be used in fresh water and salt water aquariums.
  • BUY ONE GET ONE IN FREE: This fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. It provide a constant warm environment for your pet fish to stay healthy.
Bestseller Nr. 8
Marineland Precision Heater for Saltwater or Freshwater Aquariums
  • This 300 watt heater is for aquariums up to 80 gallons. Adjustable temperature dial allows you to set the temperature 1 degree with every click.
  • Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
  • The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display
  • Easy to view sliding scale tells the exact temperature setting. Top dial view shows the setting from an additional location.
Bestseller Nr. 9
SOUTH SHORE RETAIL, LLC 300 Watt Digital Aquarium Heater for Fish Tank - Fits 10-125 Gallon Tanks - Most Affordable Digital 300 Watt Heater on Amazon!
  • SPECIAL Introductory Price! - 300 Watt Smart Aquarium Heater: Fits and heats tanks from 10 gallons to 125 gallons
  • Smart Rapid Heating Mode: Quickly heats water up to 82 degrees. Standard heating speed after 82.
  • Automatic Smart Auto Shut Off: Shuts down when heater detects water is too low or pulled out of water while plugged in. Explosion Proof - Consistent Electronically Monitored Temperature Controls - Overtemperature Protection -
  • Safe Efficient: Nickel Chromium wiring to conduct heat. - Reinforced tubing protection - Power Cord Length: 5.5 feet. 6 feet including heater length.
  • Veteran Owned and Operated Company. 100% Satisfaction Guarantee! If you have any issues at all please message us for a full refund.
Bestseller Nr. 10
FREESEA 300 Watt Aquarium Fish Tank Heater with Aquarium Submersible Thermometer
  • ★【300 Watt Aquarium Heater】: This Aquarium heater is suitable for 40 to 60 gallons aquariums, Length - 13.5 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.
Bestseller Nr. 11
HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (300W)
  • [Aquarium heater]: HITOP 300W aquarium heater, length 10.4-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums 45-60 Gallons.[
  • [Adjustable and easy to use]: This aquarium heater, adjustable temperature range 68 ~ 93 °F, after setting the temp you want, will on or shut off automatically when the water temperature changes, no extra adjustment is required.
  • [Accurate Temperature Control]: This fish tank heater built-in thermostat, will automatically keep the water at the set temperature within±2°F error. Comes with an sticker thermometer to detect water temp at any time.water temp at any time.
  • [Thickened glass]: 2mm thickened quartz glass, 33% thicker than normal aquarium heaters, much safer for both human and animals.
  • [Accessories]: An stick-on thermometer, and three suction cup meet your needs. 12 months warranty.
Bestseller Nr. 12
Fluval E300 Advanced Electronic Heater, 300-Watt Heater for Aquariums up to 100 Gal., A774
  • 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
Bestseller Nr. 13
HiTauing Aquarium Heater, Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Advanced Temperature Control System, Suitable for Saltwater and Freshwater
  • 🐬【Intelligent Water Sensor and Over Temperature Protection】This aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.
  • 🐬【Rapid Heating System】The voltage of this fish tank heater is 100-120V/50-60HZ, power 500W, Universal two-pin plug, heater rod length 12.99 inch, power cord is 98.5 inches long, 500W submersible heater for fish tank 60-120 gallon, Temp range: 63-94℉/17-34℃. The heating tube can conduct heat quickly and fully contact with water to achieve rapid heating effect.
  • 🐬【Digital LED Display Controller】The external IC temp controller of the fish tank heater can show the water temp with 2 red LED digits. The temperature in Fahrenheit and Celsius is displayed, which can be switched by pressing and holding the button for a few seconds. To set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again.
  • 🐬【Explosion-proof Quartz Material】The submersible aquarium heater is made of high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger black protective container is scald-preventing for your aquatic organisms and your safety.
  • 🐬【Wide Range of Use】This 500W aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept. There are strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged.
Bestseller Nr. 14
hygger 300W Aquarium Heater with External Digital Temperature Controller Reef Saltwater Fish Tank Heater for 30-60 Gallon Tank
  • ♦️[Over Heat Protection]♦️ 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 Quartz] ♦️ and double sealed by black protective guard this fish tank heater is resistant to explosion and corrosion, and protect fish and other livestocks from punching and scalding
  • ♦️[Build-in External IC Temp Controller] ♦️easy to read blue LED digital number shows real time water temperature. Heat indicator lights on red when fish heater start to heat and turns in yellow once it reach set temperature. Temp accuracy is +/- 1°F.
  • ♦️[Easy to Set Temperature ] ♦️without getting hands wet. Temperature can be precisely adjusted from 61 to 90°F (16°C ~ 32°C). Just press set button to desired temperature, it blinks 3 seconds and begins to work
  • ♦️[300 watt aquarium heater]♦️ voltage 110-120V, suitable for tank capactiy 30-60 gallon freshwater and saltwater aquariums
Bestseller Nr. 15
Kinbo Aquarium Heater 300 Watt Submersible Fish Tank Heater Adjustable Temperature with Diving Thermometer and Protective Case Suction Cup
  • What Can Kinbo 300W Aquarium Heater Do For You? Kinbo 300W aquarium heater is perfect for 30~80 gallon household fish tanks. It is well known that most fish cannot adapt to low temperatures, especially tropical fish. When the cold air comes, Kinbo can maintain a warm and comfortable living environment for your beloved fish. No matter what the weather is outside, where there is a Kinbo heater, there is warmth everywhere!
  • Perfect Temperature Control: Kinbo 300W aquarium heater is an excellent thermostatic control system. By rotating the knob on the top of the heater, Kinbo aquarium heater can perfectly change the temperature in the tank. Temperature control range is 68°F~ 93°F. For most fish, 76°F to 80°F is an ideal habitat temperature, Kinbo fish tank heater can easily control the temperature in a comfortable range for your beloved fish.
  • Safe And Durable: The Kinbo aquarium heater is topped with double insulated ABS material, this greatly improved the safety of Kinbo. Never leak electricity, you can safely let your fish get along with Kinbo Aquarium Heater. The surface of the Kinbo fish tank heater is made of reinforced quartz glass, which has excellent heat resistance and corrosion resistance. This gives the Kinbo Aquarium Heater a longer service life and works perfectly in fresh and salt water.
  • Working Underwater: In order to prevent dry burning, the Kinbo fish tank heater needs to be fully submerged into the water. If some parts of the heater are outside the water, do not turn it on, otherwise the heater may burn out.( Especially the turtle tank, please make sure the heater is completely submerged in the water. )
  • Thoughtful Accessories For You: A Wireless Diving Thermometer (battery included). You can use it to detect the water temperature at any time. Perfectly hidden under water, you only need a glance and you can see the readings. Your betta can even use it as a place to rest, like a betta leaf. A Protective Case With Suction Cup, you can use it to fix the heater wherever you want to fix it, and also protect your cute fish from burns.
Bestseller Nr. 16
JamgoZoo Aquarium Heater with Thermostat: 100W/200W/300W/500W Fish Tank Heater, 200W Submersible Fresh & Saltwater Heater for Fish Tank with External Temperature Smart LED Display Controller
  • 🐠【Durable Explosion-proof Quartz Glass Aquarium Heater】- JamgoZoo 200W Aquarium Heater is desinged for 45-80 gallen tank and made of hard quartz and quality plastic cover. IP68 waterproof, explosion-proof and anti-corrosion make it stronger than normal glass and metal heater. Your Fish will be no longer afraid of winter.
  • 🐠【Safety Guarantee】- With anti-dry heating protection and overheating protection, when the water temperature exceeds 94℉, the adjustable aquarium heater will stop and alert. It will also stop when the water level is 5cm lower than the heater. Escorting your pet's safety.
  • 🐠【Precise and Constent Temperature Control】- The temperature tolerance is controlled within ± 2 ℉. The heater will stop heating when the temperature reach the setting and restart when lower than setting. Always provide the best living environment for our cute fish.
  • 🐠【External Smart HD Controller】- Press the button to set the temperature ranging from 59℉ to 93℉, and there are two temperature units ℃/℉ switchable (long press for 5 seconds). Easily adjust the temperature and keep your hands dry (Tips: the controller is not waterproof).
  • 🐠【Easy to Use and Hide】- Submerge the heater in water, connect the to the power supply and set the temperature to start heating. In addition, the detachable shell design allows it to be placed in a narrower space to maintain your overall decoration style.
Bestseller Nr. 17
WELOMELO 100W / 200W / 300W / 500W Submersible Fish Tank Heating Rod, Temperature Adjustable Fish Tank Heating Rod/Thermostatic Rod with 2 Suction Cups-200W
  • 【Applicable scene】Suitable for freshwater tanks, ocean tanks, coral tanks, turtle tanks, and hydroponics. Make your pet healthier.
  • 【High-quality material】: Explosion-proof quartz glass, no deformation or softening, multi-layer sealing, waterproof and no leakage; strong double suction cup brackets, which can firmly fix the heater in every corner of the fish tank. The internal material is updated and upgraded, and the ceramic heating body is used, which has low resistance, faster temperature rise, and more power saving; 3C power cord, power plug, and authoritative certification are safer.
  • 【Quick heating/intelligent temperature control】: Step heating, the fastest heating is 5 seconds. The automatic constant temperature function automatically reduces the power when it is close to the set temperature, makes full use of the thermal inertia to reach the set temperature smoothly, and saves energy. When the water temperature is lower than the set temperature, the heater will automatically start heating. In addition, automatic safety shutdown function and overheating protection.
  • 【Note】: 1. The aquarium heater is for 100% submersible use. During the heating period, the heater must be 100% immersed in water. Unplug it when cleaning the tank or changing the water in the aquarium. 2. The heating rod is suitable for people over 16 years old. Children or minors should be under the guidance or supervision of an adult.
  • 【Use and after-sales】Easy to install, 2 strong suction cups can be installed at any angle, just make sure it is completely underwater, the heating rod must be completely immersed in the water, and finally power on. When cleaning is required, please unplug the power plug 10 minutes in advance and wait for the heater to cool down before taking it out. If you are not satisfied with our products, please contact us and we will provide you with professional solutions.
Bestseller Nr. 18
FREESEA Submersible Betta Aquatic Heater: 300 Watt Aquarium Heater with Adjustable Temperature Display for Fish Tank | Saltwater | Freshwater
  • 【 300W Aquarium Heater 】 300 watt submersible heater for aquarium, voltage: 110~120V, is suitable for use in 35-50 gal betta fish turtle tanks and aquariums. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater 35 gallon, it's easy to install it on to glass, acrylic or plastic tank.
  • 【 External Controller 】 FREESEA fish heater with display 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℉. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done.
  • 【 LED Temperature Display 】 Digital led temperature display shows the real-time temperature and error code on the screen. When the submersible tank heater is heating, there indicator light above the digit is on red. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time.
  • 【 Note 】 Do not operate or leave product plugged in when your water tank is out of water. This betta fish heater 30 gallon is 100% submersible use only, during its heating time, it must be 100% submerged into the water. It is better to install a water pump to help water circulating while heating. Because of the high power, we do not recommend you to use on turtle tank.
  • 【 Satisfaction Guaranteed 】 The aquarium submersible water heater is built with durability in mind and safety for each 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.
Bestseller Nr. 19
BOEESPAT Aquarium Heater 300W Fish Tank Heater with Anti Scald Protector and Aquarium Thermometer, Fully Submersible Fish Heater for Marine Saltwater and Freshwater (40 to 60 gallons)
  • 【300 Watt Water Heater】: This Aquarium heaters is suitable for 40 to 60 gallons fish tanks, length 10.24", voltage 110-120V, power cord is 55.1", temperature range between 59°F~95°F. We also deliberately give each customer a free diving thermometer with temp display, you can observe the water temperature of the aquarium at any time.
  • 【Intelligent Temperature Control】: When water temperature reaches to specified temperature value, water heater will automatically stop heating, when water temperature is lower than the set temperature, turtle tank heater will automatically start heating. Furthermore, automatic safety shut-off feature, and overheating protection. The heater has an indicator light for current.
  • 【Only 100% Submersible Use】: 1. During its heating time, submersible water heater must be full submerged into the water. Please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. 300 watt aquarium heater is suitable for people over 16 years of age. Children or minors use it should be under adult guidance or supervision.
  • 【More Safety Guarantee】: Durable black titanium steel heating element, covered by sturdy plastic guard, service life can last for 2 years or more,which features explosion-proof and anti-corrosion during heating. Besides, the thick heatproof cover will also prevent your little fishes from scalding.
  • 【SATISFACTION GUARANTEED】: 12 Month Warranty and 24 Hour Professional After-sales Service! 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 water tank heaterr replacement.
Bestseller Nr. 20
Woliver Aquarium Heater,200W 300W 500W 800W Fish Tank Heater - Fast Heating Submersible Aquarium Heater with Extra LED Temperature Controller Suitable for 26-211 Gallon Marine Saltwater and Freshwater
  • 🐠【Durable Explosion-proof Quartz Glass Aquarium Heater】:200W aquarium tank heater is desinged for 26-52 gallon tank. And the fish tank heater is high quality quartz glass material and it's protective sleeve, aquarium heater is shatter resistant & more durable than conventional glass heaters
  • 🐠【Temperature Range Scale】:Compact underwater analog submersible water heater can be adjusted between 57°F~93°F (±1°F). Maintain constant and stable temperatures for your aquatic creatures.
  • 🐠【Safety Guarantee】:With anti-dry heating protection and overheating protection, when the water temperature exceeds 95℉, the controller will auto shut off and alert to prevent over heating,When the submersible heater is not completely immersed in water,the tank heater still will be shut off and led controller display will be come up "E1".Perfect to protect your fish and pets safe.
  • 🐠【External Controller】: Our fish tank heater 200W is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe to adjust temperature, no need to take the heater out from water and no risk of burning yourself.
  • 🐠🐠🐠【PLEASE NOTE:】 Uncontrollable weather may cause the heating tube to fail to heat up.Especially in winter, Affected by the outdoor environment and temperature, we cannot guarantee that the heating speed of the tank heater is the same as that of the indoor. And if the outdoor temperature changes greatly, the aquarium heater cannot be heated all at once, which may cause your fish freeze to face death outside due to not being heated in time.We don't recommend that you use it in outdoor pond.

Our Winner:

Winner in comparison
Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
  • ★300W aquarium heater is suitable for 40 to 55 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached

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Maren is the editor of Pet Advisor and an avid animal lover. She got her first dog at the age of 6. Since then, dogs and their species-appropriate husbandry have been her great passion. Meanwhile she shares her home with the chocolate brown Labrador Retriever Jupiter, the mixed breed Mars and the small Bengal cat Sahara. Her years of experience with keeping animals, make her an expert for dogs and cats.