3 best 50w small aquarium heater

A 50W small aquarium heater is an essential piece of equipment for maintaining the proper water temperature in a fish tank or aquarium. It plays a crucial role in creating a comfortable and stable environment for fish and other aquatic pets.Here's what you should know about a 50W small aquarium heater:

  1. Purpose: The primary purpose of an aquarium heater is to regulate and maintain the water temperature within the aquarium at a consistent level. This is particularly important because many fish species are sensitive to temperature fluctuations.

  2. Size: A 50W heater is considered small and is suitable for aquariums with a water volume of up to 20-25 gallons (75-95 liters), depending on factors like room temperature and insulation.

  3. Temperature Control: Most 50W aquarium heaters are adjustable, allowing you to set and maintain the desired water temperature. The specific temperature range can vary between models, but it typically ranges from around 68°F to 90°F (20°C to 32°C).

  4. Heating Element: These heaters typically contain a heating element, which is immersed in the aquarium water. The element heats the water and maintains the set temperature.

  5. Safety Features: Modern aquarium heaters often come with safety features such as automatic shutoff to prevent overheating, temperature displays, and built-in thermostats to ensure precise temperature control.

  6. Submersible: Most 50W aquarium heaters are designed to be fully submersible, meaning they can be placed completely underwater in the tank. This allows for even heat distribution throughout the water.

  7. Installation: Installing a small aquarium heater is relatively straightforward. It is typically attached to the glass wall of the aquarium using suction cups or clips, ensuring that it remains fully submerged.

  8. Compatibility: It's essential to choose an aquarium heater that is compatible with the size of your tank. Using a heater with insufficient wattage for a larger tank can result in inadequate temperature regulation.

  9. Thermostat Calibration: Periodically calibrating the thermostat of the heater is recommended to ensure that it accurately maintains the desired temperature.

  10. Maintenance: Regular maintenance includes cleaning the heater and checking for any signs of wear or damage. If the heater becomes damaged or malfunctioning, it should be replaced promptly to prevent harm to the aquatic life.

  11. Temperature Monitoring: It's a good practice to use a separate aquarium thermometer to verify that the heater is maintaining the correct water temperature.

In summary, a 50W small aquarium heater is an important accessory for maintaining the well-being of fish and other aquatic pets in an aquarium. It helps regulate and stabilize water temperature, creating a comfortable and healthy environment for the inhabitants of the tank. Proper installation, monitoring, and maintenance are essential to ensure the heater's effectiveness and the overall health of the aquatic ecosystem.

Below you can find our editor's choice of the best 50w small aquarium heater on the market
  

Eheim Jager Aquarium Thermostat Heater

Eheim

Based on 3 reviews Check latest price

Product description

All 9 EHEIM Heater models are 100% fully submersible and come with a new TruTemp dial that allows the user to recalibrate the heater within a +/- 0.5F degree accurancy for precise temperature readings.

Directions for installing and using your Aqueon ProHeater

Caution: Before working with or installing heater, be sure to read and understand all safety instructions and warnings.

 

Step 1

Attach suction cups: Remove sticker around power monitor light. Attach suction cups to heater. Attaching both suction cups will ensure proper positioning in your aquarium and will allow adequate water circulation around the heater for even heat distribution. Suction cups should be placed in the middle to upper portion of the heater.

 

Step 2

Set heater temperature: Turn the adjustment knob until it corresponds to the desired aquarium temperature. As all aquariums vary, further adjustment may be required to maintain desired temperature.

 

Step 3

Heater installation: Install heater in water filled aquarium. The heater works best when installed in the aquarium in the vertical position. The installation of the heater in this position requires that the aquarium must maintain a water level above the minimum water level on the heater. The heater can be installed in the aquarium in the horizontal position. The installation of the heater in this position requires that the heater be positioned fully submerged in water at all times.

 

Step 4

Plug into electrical outlet: Allow for heater to be submerged in water for a minimum of 30 minutes prior to powering the appliance. Once heater has been mounted and submerged for the 30 minutes, plug the appliance into an electrical outlet. Once plugged in, the heater will automatically start working and the power monitor light will illuminate. A red light indicates the unit is heating and a green light indicates the unit has reached the set temperature.

 

Step 5

Adjust temperature: Allow the heater to run for 24 hours at the original setting prior to adjusting. Check the aquarium water with a reliable thermometer. Should the heater need to be adjusted from the original setting, slightly turn the adjustment knob + or - the number of degrees, as needed. Once adjusted, wait 24 hours and repeat if necessary. Note: Do not over adjust the heater, this may cause harm to your aquarium inhabitants and environment. Make sure of the required temperature for your specific setup.

  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring

User questions & answers

Question: How would this handle a ~200 gal tank outdoors where it can get into the 20's (F) occasionally
Answer: Si
Question: gallons heated
Answer: The depth of the sink is 8 inches; Sink drain after installation; the total depth is about 1 foot 2 inches
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: No instructions, sink brackets didn't work for me I put clear silicone around it . The drain was not a problem
Question: can anyone give me length of the heaters
Answer: Mine did not come with a drain. I used a stainless finish drain from Home Depot, which I think looks better than the sink color drains you can buy, and about 1/5th the cost. A word of warning... this is a big sink... by the time I got the faucet in it was pretty close to the window trim behind the sink. Still, it's a nice sink.

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.

FREESEA 25/50/100/200/300 Watt Aquarium Heater with Aquarium Submersible Thermometer

FREESEA

Based on 3 reviews Check latest price
  • ★【50 Watt Heater】: This Aquarium heater is suitable for 5 to 15 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.

User questions & answers

Question: Can I use a short extension cord with this 25 watt heater because the port is so short
Answer: About 2 in wide and 12 in long
Question: Does this heater come with suction cups
Answer: Not sure. Would have to make sure it does not rest on plastic liner. Heats water to very high temps. I have to keep unplugging it while heating hot tub. Goes well over 110 degrees. Too hot for fish.
Question: Are their any directions to put the heater in
Answer: I use mine to heat my 300 gallon stock tank pool. I use a filter with chlorine bleach. The heater works beautifully. When I take it out before we get in the pool, I wipe it down with a small towel. White residue will form but it comes off easily. I used it daily last summer August through September. Just set up the pool again yesterday and it’s working fine.
Question: Has anyone else experienced condensation in the display? it makes it very hard to read. does anyone know how i can stop this from happening
Answer: Mine doesn't. I have touched the water while the heater still connects and nothing happened.

Product features

FREESEA Aquarium Submersible Heater

1.Temperature range: 63°F~95°F , It is very easy to adjust the temperature you need.

2.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.

100% is submersible heater, and it should be installed on the inner side of fish tank.
100% is submersible heater, and it should be installed on the bottom of fish tank.
The water level of fish tank cannot very low, as it is easy for heater to exposed on water.
It is forbid for exposing some main body part of heater on water when using.

FREESEA Aquarium Heater Fish Tank Submersible Heater (50W/75W/100W) with LED Temperature Display

Guang Zhou City Freesea Industrial Co.,Ltd

Based on 3 reviews Check latest price
  • ★ Temperature range: 59°F~94°F, display Fahrenheit °F, this heater is designed for1~10 gallons tank.
  • ★ 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.
  • ★ Touch button, cyclic adjust temperature , easy to use and Safety.
  • ★【Note】:this 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.

User questions & answers

Question: The heater is displaying EE what does that means? It came without any instructions
Answer: They don’t have a physical store.
Question: What type of plastic is it made of
Answer: Not an issue we would be happy to fulfill this request. Please email us at [email protected] after placing the order letting us know your request!
Question: Can i adjust it to set to 78 degrees F for a betta fish
Answer: I believe the traditional answer is one inch of fish per gallon of water, so, it depends on how big these are.
Question: No directions came with my heater....How can I adjust the temp so that it actually sticks
Answer: A 10-15 gallon tank would be smallest we would recommend.

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

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