14 best 200 watt aquarium heaters

A 200-watt aquarium heater is a device used to maintain a consistent and appropriate temperature within a fish tank or aquarium.These heaters are commonly used by fish keepers to create a comfortable and stable environment for their aquatic pets. Here's what you should know about 200-watt aquarium heaters:

  1. Heating Capacity: A 200-watt aquarium heater is designed to heat aquariums of various sizes, typically ranging from 40 to 60 gallons. The wattage of the heater determines its heating capacity, and a 200-watt heater is suitable for medium-sized tanks.

  2. Temperature Control: These heaters come with built-in thermostats that allow you to set and maintain a specific water temperature within your aquarium. It's crucial to choose a heater with accurate temperature control to ensure the well-being of your fish.

  3. Submersible: Most 200-watt aquarium heaters are fully submersible, which means they can be placed completely underwater within the tank. Submersible heaters are more efficient in heating the water evenly throughout the tank.

  4. Safety Features: To prevent overheating and damage to your aquarium and fish, modern 200-watt aquarium heaters often come with safety features like automatic shutoff when the desired temperature is reached. Some heaters also have protective casing to prevent fish from coming into direct contact with the heating element.

  5. Heating Element: These heaters typically use a heating element encased in glass or another heat-resistant material. The element heats the water and maintains the desired temperature as per your settings.

  6. Installation: Installing a 200-watt aquarium heater is relatively straightforward. It is usually secured to the inside of the aquarium using suction cups or clips. Proper placement and positioning are essential to ensure efficient heating.

  7. Maintenance: Regular maintenance is necessary to keep the heater functioning correctly. Cleaning and inspecting the heater for any signs of wear or damage are important to prevent malfunctions and temperature fluctuations.

  8. Thermometer: It's a good practice to use a separate aquarium thermometer to monitor the water temperature independently of the heater's thermostat. This helps ensure that the heater is functioning accurately.

  9. Compatibility: Ensure that the 200-watt heater you choose is compatible with the size and type of aquarium you have. Consider factors such as the tank's water volume and the type of fish and plants you are keeping.

  10. Energy Efficiency: Energy-efficient heaters can help save on electricity costs over time. Look for heaters with energy-saving features and insulation to reduce heat loss.

In conclusion, a 200-watt aquarium heater is a vital component for maintaining a stable and comfortable environment for your aquatic pets. Proper temperature control is crucial for the health and well-being of your fish, and selecting a reliable and appropriately sized heater is essential for the success of your aquarium hobby.

Below you can find our editor's choice of the best 200 watt aquarium heaters on the market
  

Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups and Free Thermometer Suitable for Marine Saltwater and Freshwater

Nova pet supplies co.LTD

Based on 1 reviews Check latest price
  • ★200W aquarium heater is suitable for 40 to 60 gallons aquariums,Length - 11",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 째F 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.

User questions & answers

Question: Is it supposed to turn on automatically? Where’s the indicator light
Answer: Yes, it will turn on as soon as you plug it in. Follow the instructions. It will maintain the temperature automatically. The light is just below where it has 120V printed on the glass. Hold your mouse pointer over the image and it will enlarge so you can see it easier.
Question: I just did a water change and found white fuzz/algae growing on the inside of the heater after 1-2 days in my hydroponic system! Is it safe/normal
Answer: I would think that this means there is enough moisture inside the heater to allow for algae growth. This does not sound safe to me.
Question: Can this be used for outdoor aquaponics water reservior
Answer: It can be if it is totally submerged.
Question: can leave the temp adjust knob not submerged
Answer: No one answered this question right. I have the same question. If I install this vertically, is it ok if I leave the top 1inch in air?? (The adjustable knob)

Product features

Orlushy Submersible Heater
Set-up guide

Condition 1: Your needed temperature is 86℉ and rotate the control knob to 86, but after the water is heated and stays at a stable temperature - 82℉,which is lower than your desired temperature. In this case, user can reset the temperature and rotate the knob to 90(86℉-82℉= 4℉, the deviation△= 4℉,86℉+△4℉= 90℉),if one wants the temperature of 86℉

Condition 2: Your needed temperature is 86℉ and rotate the control knob to 86, but after the water is heated and stays at a stable temperature - 90℉, which is higher than the desired temperature. In this case, user can reset the temperature and rotate the knob to 82(86℉-90℉=-4℉, the deviation△= -4℉,86℉+△(-4℉)=82℉),if one wants the temperature of 86℉

Installation

Install the heater fully immersed in water horizontally

or vertically. Do not fix the suction cups in the heating area,

or it will influence dissipation of heat and even cause

deformation of the suction cup

VIVOSUN 50W-500W Aquarium Heater Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display and External Temperature Controller

VIVOSUN

Based on 631 reviews Check latest price
  • PRECISE TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within ±1℃/±2ºF; Provide the best living environment for your aquatic creatures
  • SAFETY GUARANTEE: Made with IP68, the highest waterproof level; and a titanium tube material that features explosion-proof and anti-corrosion engineering, which makes this submersible heater more resistant to damage while heating better than traditional glass heaters; Built with overheat and water shortage protection
  • EXTERNAL TEMPERATURE CONTROLLER: The touch-button controller adjusts the temperature without getting your hands wet. It’s easy to control the temp from 68℉/20°C to 94℉/34°C; Check the size chart to find your desired fish tank heater
  • EASY TO SETUP: 200W submersible heater is suitable for 21.1 to 39.6 gallons aquariums; Vertical or horizontal installation and ensure the device is fully submerged underwater
  • WIDE COMPATIBILITY: The fish tank aquarium heater has CE, FCC and ROHS certification and the plug has a UL certification; Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems

User questions & answers

Question: can this be mounted on the bottom of the tank
Answer: Thank you for your interest in this item. It does not list energy star on the specs we have.
Question: Is the cord submersible as well
Answer: Yes, that's what I'm using.
Question: Auto shut off if not in water
Answer: Yes. I just put it in a similar sized window. The exterior of the unit is less than 24" and it has the usual accordion-style wings and insulation to create a seal.
Question: Does heater turn itself off when it goes on E1?...(due to water level being low
Answer: Everything I needed was included for window installation. No additional exterior support was needed.

Product features

VIVOSUN aquarium heater for cold blooded creatures

VIVOSUN submersible aquarium heaters are more efficient, and the heating unit is completely submerged in the water, providing more consistent heating to the aquarium.

Features:

Intelligent Indicator Light

Red Light Water temperature is below set range, heating function will engage and increase temperature automatically

Blue Light Water temperature is within desired set range, monitoring function is engaged

2 stable suction cup angles

The 2 suction cups attached can suck the heating rod on the fish tank wall

Set the Temperature Conveniently

  • Press set button to start the temperature setting. The LED display will start to flash, continue pressing set button, the number in LED screen will circulate from 68 to 94 °F
  • Press SET for 5 seconds for switching between Fahrenheit and Celsius

ViaAqua 200-Watt Quartz Glass Submersible Heater with Built-In Thermostat

ViaAqua

Based on 996 reviews Check latest price

Product description

High quality quartz glass submersible heater with a visible temperature readout

  • High quality quartz glass
  • Fully-submerisble
  • Visible temperature setting
  • For use in fresh or saltwater aquariums

User questions & answers

Question: Can this be used in a pond
Answer: Does your gauge have left hand threads? If it does then this gauge will work.
Question: will this work with a 40 gallon tank that has 20 gallons of water in it
Answer: Hi Carl, Not that we have seen. You may want to contact Taprite itself and see. I do know the unit asked about is a left handed thread. Tommy G Amazon Specialist at Kegconnection
Question: How long is the power cord on this model
Answer: HI Sean, This is a 1/4 NPT HP gauge which works for Taprite regulator that are left hand thread. Most standard beer regulators are this size and are right hand thread. Good luck. There are 1/2 out there but they look to be for other uses than the beer regulator. Tommy G Amazon Specialist at Kegconnection
Question: I have a 60 gallon tank. Is this going to heat it thoroughly
Answer: The valves must be stuck, I solved the issue screwing and unscrewing the regulator and manually releasing the pressure.

Aqueon 100528588 Glass Adjustable Heater,Black , 200W

Aqueon

Based on 201 reviews Check latest price

Product description

Aqueon Submersible Aquarium Heaters are made from thermal shatter-resistant quartz glass and were designed to absorb impacts, making them extremely durable. A LED indicator light comes on when unit is heating. UL approved, the heater is also programmed to turn itself off when not properly submersed to avoid overheating and damage. Electronic thermostat ranges from 68° to 88°F. The suction cups make horizontal or vertical installation quick and easy.

  • Precise temperature setting to 1-degree F (68-88 degrees F)
  • Recommended for aquariums up to 75 Gallons
  • Fully submersible, quartz glass shatter-resistant construction
  • UL Approved, Automatic safety shut off and overheat protection
  • Power indicator light turns on when aquarium water is being heated

User questions & answers

Question: Will this heater fit vertically in a 10 gallon tank
Answer: Possibly if your pond is less than 75 gallons...there are heaters out specifically made for ponds and water tanks.
Question: Are these good? Will it going to crack my tank
Answer: It's probably too big. For 20 gallons of water, a 50-watt would be more appropriate. This is a 200-watt. Mine is in about 80 gallons of water in a very cold room.
Question: Will this heater be fine for a 29gal aquarium? I only need it temporarily before this tank gets moved to our 55 gal
Answer: Pretty small. About 4 or 5 ft if I remember correctly. It worked well but I no longer use it and don't remember it exactly. It wasn't 6 ft. Thats for sure
Question: Is their a warranty
Answer: Yes - it may take a little longer to bring tank up to temp than the suggested 300 watt - if the price difference between a 200 watt and 300 watt is large enough go for the 200 but keep in mind that when you run something longer it will wear out faster so take wear and tear into account when considering the price difference. Also a "strong" suggestion is to invest in a temp controller - you can order one from amazon or ebay for around $20 - I have owned inexpensive heaters and expensive ones and none of them keep very accurate water temps. Best $20 I ever spent on my tank was an independent temp controller. - http://www.amazon.com/Elitech-All-Purpose-Temperature-Controller-Thermostat/dp/B008KVCPH2/ref=sr_1_1?ie=UTF8&qid=1396905998&sr=8-1&keywords=temp+controller

Eheim Jager Aquarium Thermostat Heater

Eheim

Based on 3 reviews Check latest price

Product description

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium.

Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is true that the principle is still the same as decades ago. But a lot has changed in the meantime. And today the EHEIM adjustable heater is an ultra-modern electronic thermal device with the best available technology. A jacket made from special laboratory glass increases the heating surface, serves as a heat shield and ensures optimum even heat emission. And no matter if you want to heat a 5 or a 265 gallon aquarium – you have 9 sizes to choose from.

The Jager 200 watt heater is rated for aquariums 79-106 gallons and has a 15" rod.

  • Elemi Jaeger Trump Heater 15 Inch 200 Watt
  • Manufactured by Elemi
  • Made in Germany

User questions & answers

Question: How would this handle a ~200 gal tank outdoors where it can get into the 20's (F) occasionally
Answer: Hi there! We would not recommend a 200 watt heater for a 10 gallon tank, as this is a heater that is suitable for aquariums up to 75 gallons. For a 10 gallon aquarium, we would recommend a 50 watt submersible heater.
Question: gallons heated
Answer: Hi there! Depending on your tank size, this would be a fantastic fit. This 200W is designed for aquariums up to 75 gallons.
Question: Heater is too long to sit vertical in my tank. Horizontal would be fine. It says it's fully submersible but I'm reading the opposite here. Any help
Answer: Yes
Question: can anyone give me length of the heaters
Answer: Yes, there is a lifetime warranty for this heater.

Product features

Eheim Jager TruTemp Submersible Heater

Precisely regulated, constant water temperature is very important for the comfort and success of your aquarium inhabitants. The Jäger TruTemp adjustable heater is an ultra-modern electronic thermal device offering today's best technology. Designed for use in both freshwater and saltwater aquarium, Jäger TruTemp fully-submersible heaters include these great features:

Shatterproof glass construction - Made with laboratory-grade glass, TruTemp heaters are free of pollutants, resistant to chemical and biological substances, and able to withstand extreme temperature fluctuations. Their glass jackets also enlarge the heating surface and ensure even heat distribution.

TruTemp Dial - Temperature can be precisely adjusted from 18° to 34° C (65° to 93° F). Using the TruTemp dial with readjustment ring, the user can recalibrate the heater for a precise temperature reading. Control accuracy is +/- 0.5° C.

Thermo Safety Control - This safety mechanism enables 'running-dry' protection. The heater will shut off when removed from the water, and resume functioning upon return.

On/Off Indicator Light - This convenient feature eliminates guessing and enables the user to verify heater function without getting their hands wet!

Each Jäger TruTemp Heater also includes a mounting bracket and suction cups for secure and flexible placement within your aquarium system. Lastly, an extra long power cord accommodates most applications.

JEREPET 200W Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display and External Temperature Control,Suitable for Mini Freshwater and Saltwater Tank

JEREPET

Based on 3 reviews Check latest price
  • Specification:200W aquarium heater,suitable for the tank from 25 to 45 gallons,temperature range:68-94°F;5 feet cable ,AC 110-120V,mini size :2.2*4.7*1.1 inches;
  • Over-temperature and low water level protect:Jerepet 200W submersible fish tank heater will be automatically stop heating when temperature over 95℉(35℃) or the heater out of water, safety of your fish, turtle and frog;
  • External Controller:preset the temperature by pressing the button on the cable ,safty and easy to use;
  • LED digital display:real time LED termperature and working status digital display,no need another thermometer;
  • Marine water and fresh water use: can be used in saltwater or freshwater tanks, used as turtle tank heater, betta fish tank heater frogs newts tank heater;

Product features

JEREPET 200W Aquarium heater with LED temperature display and external control , for 25-45 gallon aquarium;

JEREPET 200W Aquarium heater with LED temperature display and external control , for 25-45 gallon aquarium;

safety,durable and precise temperature control;

FEATURE:

  • LED display: real-time temperature display and error code display,monitor your aquarium temperature and heating working status;P
  • recise external temperature control, temperature range:68-94 °F, and the accuracy is 2 °F,safty and convenient operation;O
  • ver-temperature protection and water shortage protection, the heater will stop heating automatically when temp over 94 °F or heater is out of water;S
  • mart heating and energy saving , with smart control chip, use Nicochrome heating material,ECO and fasting heating ;C
  • an be used in both marine and fresh water, can be used in nano aquarium tank,sump,betta,turtle frogs tank;

Tips:

  • Fully submerged the heater in water ,and make the power cable a drip shape;
  • Place the heater near water flow in or near return pump so your aquarium get even heating;
  • Power off the heater before you clean the aquarium or change water, after 10 minute cooling then take out the heater;
  • Read the instruction before use;

AQQA Submersible Aquarium Heater,100W/200W/300W/500W/800W Fish Tank Heater,External Temperature Controller LED Temperature Display with 2 Suction Cups Suitable for Marine Saltwater and Freshwater

AQQA

Based on 163 reviews Check latest price

Product description

Welcome to AQQA🐟🐟

AQQA is a professional shop specializing in aquarium supplies and accessories,all products from this store the actual filming of goods please rest assured that you purchasers to buy!

We are determined to provide better product and better services to our customers.Our customer service is online 24 hours, providing pre-sale, sale, after-sale service, the product implements a free return policy, Free replacement within 3 months. If you have any questions, please feel free to contact us.

AQQA--Aquarium accessories,Quality Assurance



Product Description

Product Name:AQQA Aquarium Submersible Heater

Size:100W 200W 300W

Voltage:110V/60Hz

Cord length:4ft+5.9ft

Controller:External Controller(Not waterproof)

Temp Accuracy:±1℉

Suggest fish tank size:25-35gallon 45-80gallon 80-95gallon

Package included:1×heater with external controller 1×user manual 2×suction cups



The main function of heater

1.Automatic heating, intelligently stop heating when the set temperature is reached

2.Dry burning-resistant protection, 5cm away from the water surface, automatic power off

3.The current water temperature and the set temperature are displayed at the same time, without mutual interference, the current water temperature can be seen at any time

4.Memory function, when the power is off, the previous settings will be maintained without resetting. If the heater have been in the fish tank, it will automatically start running after the power is turned on. Follow the previous settings



What The Lights Mean

2.Red Light:The heater is heating

1.Blue Light:Constant temperature,the water temperature is at the set temperature value

3.Display shows"E1":Shut off automatically when the heater exposed to air,not fully submerged.



WARRANTY

1-year free warranty.



If you have any questions, please contact us, wish shopping happy

  • 🔥【Explosion-proof Quartz Glass Aquarium Heater Durable and Safer】The heater 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 long lasting.2 hours heating 1℃.The shell is a high temperature resistant PC material, which can effectively protect the fish from scalding.
  • 🔥【Temperatures Ranges 68℉ to 93℉,Automatic Heating】The heating rod built-in thermometer,When the water temperature is lower than the set temperature by 1℉, the heater will automatically heat up, and stop heating when the water temperature is consistent with the set temperature.Fahrenheit and Celsius can be converted to each other,Pressing and Press and hold "+" and "-" at the same time, Fahrenheit and Celsius will be converted into each other after 5 seconds.
  • 🔥【LED External Controller with Indicator Light】The controller is not waterproof, please keep away from water,LED digital display screen shows the current water temperature and preset temperature.The number the left on the controller is the current water temperature, and the number on the right is the set temperature,torch light and surrounding lights flicker means heating,torch light and surrounding lights not flicker indicate constant temperature.
  • 🔥【Memory Function,Dry Burning-resistant Protection】Controller with memory function,If power is shut off,the heater will keep the temperature settings until it powers on again,no need to worry about pets when you going out.When the heating rod is 5cm above the water surface, the heating rod will automatically power off, and the controller will display "E1". When submerged in the water again, the heater will automatically return to normal, no need to unplug the power or reset the controller.
  • 🔥【Controller Can Be Installed with Adjustable Hooks】A hook can be installed on the back of the controller to hang on the fish tank. The installation is very simple and no tools are needed.The size of the hook can be adjusted according to the thickness of the fish tank,Very safe and reliable.AQQA products enjoy a one-year warranty, please rest assured to buy.

User questions & answers

Question: Would the 500w be ok in a 65 gallon tank that will be eventually used in a 125 gallon
Answer: Hello,Yes,We recommend that it can be used between 66-135gallon, and 65 gallons can also be used.
Question: How big is this controller
Answer: Hello,the size of controller is 4.7"*2.8"(12*7cm), Ultra hd LED screen,Double display of temperature and setting temperature,You are welcome to buy and use.
Question: Where is this heater made
Answer: Hello,the heater made from china.
Question: Can the 100 watt be used in a 20 gallon tank
Answer: Hello, it can be used, please set the temperature lower, for safety.

Uniclife Aquarium Heater Submersible with Thermometer, 200 Watt for 50 Gallon Fish Tank

Uniclife

Based on 99 reviews Check latest price
  • Ideal for 25-50 gallons fish tanks, can be installed in both fresh and saltwater.
  • Red rotatable knob on top for adjusting the temperatures between ranges of 68°F-93°F. Visible temperature displayed allows accurate temperature maintain.
  • Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 11.2" x 1" (L x D).
  • Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The color of number will change to blue to indicate the temperature).

User questions & answers

Question: Is there supposed to be condensation in the heater
Answer: I don't believe it will. i had it in a 175 gallon tank in my greenhouse (unheated) and it got down below 50 degrees in the tank when outside temps were 20 degrees. it has a good thermostat and you could use 2 of them to be on the safe side
Question: Purchased this item and there is broken glass inside. Is that normal
Answer: 10 gallons here on two different tanks. Bought both of mine three years ago. Both have ran constant since Feb. 2010 at around 80F. No problems in either tank at all except when the room itself drops into the low 60s, then they tend to sit at the lower end of 78/79. Have ran them on as few at 5.5 gallons, as large as 15g. Did awesome.
Question: Indicator light
Answer: The 300 is too big to stand up right. Mounted on the side and the bottom of tank it works very well. The suction caps are for crap, I’ve only had it a couple months and the suction caps are completely flat. The heater itself is good. I just bought a second 300 by accident. I thought a 150 would fit my tank better. Oops. No refunds on stupidity!
Question: How long is the cord itself
Answer: Size Power Needed Heater Length7-16 gallons 50 watt 9"16-26 gallons 75 watt 10.2"26-40 gallons 100 watt 12.2"40-53 gallons 125 watt 12.2"53-79 gallons 150 watt 13.4"79-106 gallons 200 watt 15.7"106-159 gallons 250 watt 17.3"159-264 gallons 300 watt 19.6"

Product features

Uniclife 200W Aquarium Heater for 25- 50 Gallons

An aquarium heater is an essential device for warming water in your fish tank. HT-6200 Anti-Explosion Fish Tank Heater is suitable for up to 50 gallon aquariums, which can help your tropical fish and other aquatic pets to keep away from stress and disease by providing proper temperature. The heater will keep your tank at a constant temp especially in cold days. A good range for most fish is 76℉ to 80℉.

Easy Adjustment

  • By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
  • The red indicator light on while heating, automatic shut-off when reach the temp.

Submersible

  • The aquarium glass submersible heater must be fully immersed.
  • Install it either vertically or horizontally by attaching the suction cups to the glass of the tank.

Stick-on Thermometer

  • Distinguishable blue color shows the current temperature of your aquarium water.
  • Monitor and maintain a constant warm environment for your fish's health.

Aqueon Preset Heater

Aqueon

Based on 1 reviews Check latest price

Product description

Aqueon Preset Heaters require no adjusting! The preset temperature has been calibrated to 78°, appropriate for most tropical fish. The fully submersible heaters are constructed of shatter-resistant quartz glass and features an automatic safety shut-off to avoid overheating. An LED indicator light displays red when actively heating. Can be positioned at a horizontal or vertical angle in your tank.

  • Preset to 78 degrees, appropriate for most tropical fish.
  • Fully submersible, shatter-resistant construction
  • Automatic safety shut-off avoids overheating and damage
  • LED indicator light displays when actively heating
  • 1 year warranty
  • 200 watt is recommended for 75 gallon aquariums

User questions & answers

Question: how long is this heater
Answer: I don't think so... Electronics and water don't mix. I usually replace mine every year as it seems like they all develop condensation over time.
Question: What’s the lifespan of this heater
Answer: No it is not normal.
Question: is this a timed heater ? I have been having having trouble with the light turning off
Answer: Do not know what you mean by indicator light. It is an aquarium heater to heat the water and keep it at a certain temperature.
Question: Does this heater come with suction cups? This heater came with a 29 gallon setup I won but it did not have suctions cups
Answer: 58 inches

Uniclife 200 Watt Aquarium Heater with Thermometer, Fish Tanks Heater of 50 Gallon

Uniclife

Based on 20 reviews Check latest price
  • Can be used in both freshwater and saltwater, applicable for 25-50 gallon fish tanks.
  • Adjust temperature by top red knob, range 68°F-93°F. Tube temperature displayed.
  • Water-tight of IP68 sealing. 2mm shatterproof quartz housing, bottom clash-proof cover. (NOTICE: Can’t be used even just cracked a tiny bit, pls contact us for replacement)
  • Measurement 11.2" x 1" (L x D). Only allowing for vertical or horizontal installment.
  • Package include aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1.

Product features

Uniclife 200W Aquarium Heater for 25- 50 Gallons

An aquarium heater is an essential device for warming water in your fish tank. HT-6200 Anti-Explosion Fish Tank Heater is suitable for up to 50 gallon aquariums, which can help your tropical fish and other aquatic pets to keep away from stress and disease by providing proper temperature. The heater will keep your tank at a constant temp especially in cold days. A good range for most fish is 76℉ to 80℉.

Easy Adjustment

  • By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
  • The red indicator light on while heating, automatic shut-off when reach the temp.

Submersible

  • The aquarium glass submersible heater must be fully immersed.
  • Install it either vertically or horizontally by attaching the suction cups to the glass of the tank.

Stick-on Thermometer

  • Distinguishable blue color shows the current temperature of your aquarium water.
  • Monitor and maintain a constant warm environment for your fish's health.

MQ Submersible Aquarium Heater Auto Thermostat, 200W/300W/500W Fish Tank Heater with LCD Digital Aquarium Thermometer, Shatter-Proof and Blast-Proof

MQ

Based on 691 reviews Check latest price
  • 【For Fish Tank 15-40 gallon】200W 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.

User questions & answers

Question: My heater is not working?can you help me before return it
Answer: Around 4.5 inches
Question: does anyone know the diameter of the top control section
Answer: I've no idea how long it is advertised to last, but I've had mine for a couple of years now and it still works reliably.
Question: Did anyone put a fresh name brand battery in thermostat at purchase or stayed with cheap no name battery in it causing malfution reading
Answer: I don't know that's it's timed. However initially it will stay at a preset of 78 but later it will start to keep temps of 75-77 depending on what size tank it's in. Also the black paint will chip off. Mine did within a couple months. Not good for Saltwater. :)
Question: Is it work for 220 v or only 110 v
Answer: Yes, it comes with 1 suction cup. Stay away from this product; spend a little bit more and buy one that has a lifetime warranty and you can set the temperature.

Product features

MQ 200W/300W/500W Aquarium Heater with LCD Digital Thermometer

The aquarium heater tube is made of shock resistant quartz glass, excellent in explosion-proof. Effectively maintain the tank water in the constant temp between 68-94℉ you set, stop heating when the water temp is 1.5-2℉ above the set temp

Temp Adjustable

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.

With a Digital Aquarium Thermometer

Come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze.

Compact and Lightweight

Comes with detachable shield and 2 suction cups. It's easy to hide it in the tank (acrylic or glass).

Fluval M200 Submersible Heater, 200-Watt Heater for Aquariums up to 65 Gal., A784

Fluval

Based on 1 reviews Check latest price

Product description

The Fluval M Submersible Aquarium Heater’s quality European manufacturing utilizes superior components and construction. The Fluval M200 Submersible Heater is ideal for use in freshwater and marine aquariums up to 65 gallons and has a temperature range of 66-86 degrees Fahrenheit. This sleek, compact heater can be trusted for exceptional performance and unsurpassed reliability. Unique only to the Fluval "M" series the reflective technology equipped in the Fluval M Submersible Aquarium Heaters helps maintain the aquariums' natural look as the heater reflects the colors of the surroundings.Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology a landmark breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Above and beyond its manufacturing role, Fluval prides itself on its charitable and educational efforts that give back to the Fishkeeping community, whether it means helping to fund the protection of wild coral reefs or jumping on a plane to document endangered fish species halfway around the world. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

  • Aquarium heater that blends into the aquarium environment with built-in reflective technology that mirrors the surrounding colors
  • Computer-calibrated thermostat and easy-to-adjust temperature control dial
  • Shock resistant Borosilicate glass and high density ceramic heat sickness
  • Easy to install with slim profile tube for easy placement
  • 200-watt heater suitable for freshwater and saltwater aquariums up to 65 gallons with a 3-year warranty

User questions & answers

Question: I have the fluval flex 32.5 gallon tank. which heater should i get? thank you
Answer: No...it has a standard two prong plug.
Question: How long does it take to heat a 15 gallon tank
Answer: Objects should be kept at least 3 feet away from the front of any residential heater. Thank you, Comfort Zone Support Team
Question: Can it go compleatly under water
Answer: Probably not. I have two heaters in my basement.
Question: Can you adjust the heat with this heater? Does it have a dial
Answer: No it doesn't and puts out great amount of heat. Just recieved it last week.

Product features

Fluval M Submersible Heater

The M-Series submersible heater range provides exceptional performance, reliability and exclusive mirror technology to blend in with its surroundings.

  • 200-Watt heater designed for aquariums up to 65 gallons
  • Made in Europe using superior components and construction
  • Durable, mirrored finish seamlessly blends heater into surroundings by reflecting colors of the aquarium
  • Computer-calibrated thermostat
  • Easy-to-adjust temperature control dial
  • Sleek and compact design
  • For use in freshwater and saltwater aquariums

FREESEA Fish Tank Aquarium Heater: 200 | 300 Watt Submersible Mini Adjustable Thermostat with LED Digital Temperature Display for Coral Tank | Saltwater Tank | Betta Tank

FREESEA

  • ★【200Watt Heater】: This Mini Aquarium Heater is suitable for 20 to 35 gallons aquariums, voltage 110-120V, power cord is 3.5 ft, please choose the right wattage aquarium heater according to our size chart.
  • ★【Temperature Range】: 62°F~93°F , display Fahrenheit, It is very easy to adjust the temperature you need, touch button, cyclic adjust temperature , easy to use and safety.
  • ★【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】: This Mini Aquarium Heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • ★【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.

Product features

The Greatest Advantage

Multi-function LED digital display heater: Use advanced IC technology,

Oval appearance, large LED display.

Clearly and accurately displays the water temperature,

highlights your aquarium.

No need to buy another thermometer.

The Most Safety Operation

How to adjust temperature:

There is a regulator connect with power cord, just press the button after heater has been installed,

and you can will see the LED display shows °F,

press the button until you see the display shows your expecting temperature (display 59~93℉ in cycle by),

and then leave it for heating up.

For example:

Expecting temperature is : 80℉ Heater display shows: 70℉ Then, Press the regulator 10 times,

then you will see the display shows from 70 to 80°F.

When you see the display shows 80°F,

then leave it for heating.

Advanced Waterproof

Highest waterproof level: IPX8

Built-in Temperature Control Chip

Built-in temperature control chip

External Touch Button

External Touch button, cyclic adjust temperature , easy to use and Safety.

Small Size

Heater Ideal for 1-10 gal fish tanks. Heater Size: 2.5 x 1.5 x3.5 inch

Mylivell Aquarium Heater Submersible Auto Thermostat Fish Tank Water Heater and Adjustable Temperature with Suction Cups and Protective case

Mylivell

Based on 1 reviews Check latest price
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.
  • Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20°~34°C(65° F - 93° F), and the display is easy to read.
  • Fully Submersible. Power: 200W. Suggested water volume: 75gal.
  • Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.

User questions & answers

Question: does it turn off when it is at the chosen temperature
Answer: Firstly,you need to set the temperature.If you set at 78,if the water in the tank is lower than the setting,the heater will be heated, the red light is on. After heating,the water in the tank up to the temperature of the setting,the heater won’t heat up, the red light is off. So don't worry about the light shock. If there is any problem,feel free to contact me .
Question: Is the black plastic bumper at the bottom supposed to stay on when using heater or is it supposed to be remover before turning heater on
Answer: I think its supposed to stay on
Question: Can i use this on a circular aquarium? Will the suction cups hold to a circular tank
Answer: I don't see any issue of mounting this unit in a circular shaped tank. One major issue is to make sure that the unit is totally submerged preventing it from burning out. There is a line on it stating it must be below water. Do this... and it will last.
Question: What is the actual length of the 50W heater itself, not the cord
Answer: The aquarium heater 50W is about 9.5 inch long.Hope this helps you.

Product features

Mylivell Submersible Aquarium Heater

  • You will need an aquarium heater to keep your tank in a steady and controlled temperature, as proper temperature range is very important to fish and other Aquatic in winter.
  • Mylivell Submersible Aquarium Heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Fish water heater will be your best choice!

Latest Reviews

View all