Fluval E Electronic Heater

by Hagen

Product Features

• Dual temperature sensors provide accurate and real time water temperatures
• LCD temperature display available in both Fahrenheit and Celsius; Range of 68 to 93 degrees Fahrenheit
• Fast heat technology built with a safety shut-off; Integrated fish guard to protect fish and invertebrates
• Equipped with a slim profile mounting bracket; Colored display alert system
• Suitable for aquariums up to 65 gallons; 200 watts; 5 year warranty

Product Details

• Product Dimensions: 2 x 1 x 12.5 inches
• Shipping Weight: 15.5 ounces (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B001VMWT6Y
• Item model number: A773
• Average Customer Review: 4.2 out of 5 stars  See all reviews (54 customer reviews)
• Amazon Best Sellers Rank: #1,908 in Pet Supplies (See Top 100 in Pet Supplies)
  • #13 in Pet Supplies > Fish & Aquatic Pets > Aquarium Heaters

Product Description

Size: 200-Watt

Amazon.com Product Description

Fluval E Heaters

Maintaining proper temperature is one of the most important factors in aquarium care. The Fluval E Heaters continuously monitor and display aquarium water temperature, ensuring the well-being of your aquarium inhabitants.

Simply the most technologically advanced submersible aquarium heaters available today, the Fluval E Series features VueTech technology. Its LCD display delivers peace of mind by continuously showing real time water temperatures. During normal operation the temperature display changes color if the aquarium water temperature varies from the pre-set temperature. Should external heat sources or other equipment cause the aquarium water temperature to rise or fall excessively the colored screen will flash, indicating a potential risk.

Product Features

VueTech Technology for precision and safety- During normal operation the temperature readout will change color if the aquarium water varies +/-2 degrees F or more from the pre-set temperature. Should any external heat sources or other equipment, such as chillers, cause the aquarium water temperature to rise or fall beyond 5.5 °F, the colored screen will flash, indicating a potential risk. The ability to measure temperature in Celsius is also an option.

Precise temperature setting- With the easy to use adjustment lever, the temperature can be precisely set in 0.5° increments.

Advanced safety- The integrated fish guard offers advanced protection. Fish and invertebrates cannot come into direct contact with the heater core. The glass sleeve is also protected against shocks from large fish species.

Heater bracket- Built with a secure slim profile mounting bracket. The heater can be adjusted or removed without removing the mounting bracket. The great asset of the mounting bracket is its ability for you to mount the heater at varied angles, so you can view the front screen in any direction you wish. For those with a marine aquarium and sump, you can also attach the Fluval E heater there.

Digital micro-processor- Advanced micro-processor technology with dual temperature sensors provide accurate and real time water temperature readings.

The Fluval E series heater is available in four sizes:

50 Watts: Suitable for aquariums up to 15 gallons
100 Watts: Suitable for aquariums up to 30 gallons
200 Watts: Suitable for aquariums up to 65 gallons
300 Watts: Suitable for aquariums up to 100 gallons


A few key facts to know about your Fluval E Heater:

Thermal Sensor:
The temperature sensing technology is as precise as an external probe!
The internal Thermal Sensor samples the actual water temperature directly through the glass of the heater tube rather than the air temperature within the tube, as is the case with standard bi-metallic strip thermostats. Since the Thermal Sensor actually reads the true water temperature, it is more accurate and reliable than conventional bi-metallic heaters.

Reliable and Precise Electronic Components:
Advanced Electronic Circuitry, no moving parts to wear out!
Since the FLUVAL E heater has no bi-metallic points, there are no moving parts to arc, corrode or wear. The thermostatic control of the heater is separated from the water thermal sensor, different from conventional bi-metallic heaters, where the sensor is directly built into the thermostat. It is therefore less affected by extraneous factors.

Four Sizes of the Fluval E Heater

Simple Installation Key Facts

It’s recommended to fill the aquarium with water that is close to the desired temperature you are trying to achieve.
-To ensure even and thorough distribution of warmed water and to provide an accurate temperature readings, the heater must be placed in close proximity to a source of water movement. Specifically, it should be placed at the rear of the aquarium, close to a filter or pumps water output. Water must at all times cover the heater at least up to the minimum water level indicated. Always maintain the water level in the aquarium to compensate for water loss due to evaporation. Note: A unique heater feature is its Low-Flow Indicator. If you see “LF” on your heater screen, this simply means that you need to place the heater in an area with more water circulation.(Refer to Instruction Manual for more information)

1. Position the heater in the aquarium (vertically or horizontally) and press suction cups firmly against glass, to adhere to the aquarium wall. If rear glass mounting is not possible, use the side glass mounting adapter.

2. Allow heater to acclimatize in the aquarium water temperature for 20 minutes before plugging it into the electrical outlet.

3. After 20 minutes, plug in the heater and set the degree scale if necessary.

4. At each Power-on, the E Heater goes through an initial self-test procedure during which it carries out a self-diagnosis to check internal circuitry and sensors operation, followed by a period to verify the surrounding conditions.

WARNING: The heater must never be operated outside of the aquarium. If the water level falls below the minimum water level MIN, the thermostat can no longer "read” the water temperature and therefore can no longer control the heating correctly. If it has to be taken out of the water or when transferring or changing the water, disconnect the heater from the power source and wait for at least 30 minutes to allow it to cool down.

Warranty Information:
Fluval E Series Heaters are guaranteed against defects in material or workmanship under normal aquarium usage and service for 5 years. We offer a 5 year guarantee on all non-replaceable parts which means that the heater will be repaired or replaced at the manufacturer's discretion, free of charge, when the complete heater is returned with proof of purchase and postage paid. This warranty does not apply to any heater that has been subjected to misuse, negligence, or tampering.

Product Description

The Fluval E Electronic Aquarium Heater with VueTech technology delivers peace of mind by continuously displaying real time water temperature within the set range of 68 and 93 degrees Fahrenheit. Equipped with an advanced digital microprocessor monitoring system with dual temperature sensors, the Fluval E Electronic Aquarium Heater continuously monitors and displays aquarium water temperature, ensuring the well-being of your aquarium inhabitants. If the water temperature changes from the pre-set temperature during normal operation, the temperature display will change colors from green to blue or red depending on severity. The display screen will also flash if the aquarium water temperature excessively rises or falls, indicting a potential risk. The heater is built with a slim mounting bracket that allows the heater to be placed vertically or horizontally and it can be angled for easy viewing. The integrated fish guard offers protection for fish and invertebrates, helping to make the Fluval E Electronic Aquarium Heater one of the most technologically advanced submersible aquarium heaters available. The Fluval E Series comes equipped with an easy to use adjustment lever so the temperature can be set precisely in 0.5 degree increments. By pushing the lever to the left for five seconds, you can change from Celsius to Fahrenheit. If you push the lever to the right or left for one second you can change the set temperature up or down. With the advanced safety that the Fluval E Series offers, fish and invertebrates will not be able to come into direct contact with the heater and the glass sleeve is protected against shocks from large species of fish. With the variations in water temperature the readout changes color to match. When the screen is green, the temperature of the water is in the safe zone. When the screen turns blue, the temperature of the water is too low and when the screen turns red the water temperature is too high.

Customer Reviews

Most Helpful Customer Reviews

11 of 11 people found the following review helpful:

5.0 out of 5 stars So Far, I'm loving this...finally found a decent and reliable heater?, November 28, 2010

By 

Mark L (Verona, WI USA) - See all my reviews

This review is from: Fluval E 300-Watt Electronic Heater (Misc.)

Love the features...absolutely love the fact it has an integrated heater guard....seems well made...love the integrated temp display (BTW mine is showing an accurate temp reading)...love the ease in accurately modifying temp.

Longer version: Anyone who is serious about tropical/saltwater healthy fishkeeping should take their water temperature very seriously (unfortunately, it seems few do). In my experience, there are few well-made, reliable heaters out there regardless of how much you are willing to pay (my kingdom for a decent/reliable heater I'd always say!).

I used Hagen/Tronics for years and found them to be the best money could buy...(and they were competitively priced, about 40 bucks for a 200W submersible). Another reason I liked the Tronics is that I have heater guards that fit them (another often overlooked concern in my opinion). Unfortunately, they quit making the Tronics and eventually my backups were gone. I have since been on a very frustrating journey... I've tried all kinds (including recently Marineland Stealth and Hydor....which I was told were some of the better ones out there...they sucked... 2 Stealths failed closed (overheated, thank goodness for my close monitoring)--The Hydor could not maintain temperature (wild temp swings)....everything else I looked at and read about seemed like more of the same chinese junk. Although I'd read about some reliability issues, I was about to pull the trigger on the very expensive JBJ True Temp Digital controlled heater....when someone suggested this one.

I will update this review once I've logged some hours...but I'm very optimistic about this model!

NOTE: Some seem to think this is not Submersible...though not documented clearly and implied otherwise, it IS FULLY SUBMERSIBLE (see my response to the previous post).

11 of 11 people found the following review helpful:

5.0 out of 5 stars Great color coded display, November 21, 2010

By 

Grusonii - See all my reviews

Amazon Verified Purchase

This review is from: Fluval E 200-Watt Electronic Heater (Misc.)

Have this heater now in my fish tank for about a year. The heater itself has a glass housing. The outer casing visible in the picture is plastic. That's great to avoid any fish getting burned by the heater. Target temperature adjustment is straight forward following the instructions. I strongly doubt that any fish could change the adjustment (done by the little red lever which, granted, is in the water as well) as I had read somebody else posting. I use the heater fully submerged.

One thing to be aware of is that the heater needs to be in "flowing" water when being mounted vertically. Otherwise the built in temperature sensor will get triggered and report an error (rising warm water will create and "overheat" condition which switches off the heater). I don't have much water flow in my fish tank so I decided to mount the heater horizontally an inch or two above the gravel. Works perfectly this way.

The best part of the heater is the color coded built in temperature display. As long as the water has a temperature within one or two Fahrenheit of the target temperature the display is green. If the water temperature rises the display becomes red (while of course also displaying the exact temperature as a number). If rising an additional few degrees the display blinks red. Similarly if the water temperature goes below the target range the display becomes blue. This way one can quickly check that the water has the right temperature.

5 of 5 people found the following review helpful:

5.0 out of 5 stars Nice features, March 16, 2010

By 

natas (Minneapolis) - See all my reviews

This review is from: Fluval E 300-Watt Electronic Heater (Misc.)

I recently upgraded my 55 gallon aquarium heater to the Fluval E Series 300w. It does an excellent job of maintaining temp and comes with a tough exterior cage (prevents disasters). I really enjoy the temp display screen, but some might find the bright light a problem at night (if you're looking for a dark room). I've bought several heaters over the years, from different brands, and this is by far my favorite.

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