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Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal.

  • Based on 4,506 reviews
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Availability: In Stock.
Fulfilled by Petco

Arrives May 26 – May 28
Order within 16 hours and 2 minutes
Available payment plans shown during checkout

Size: M50


Features

  • Modern Aesthetic: M-Series heaters combine modern aesthetics with reliable Italian construction. Employing an ultra-slim profile, these heaters are a welcome departure from traditional, bulkier designs.
  • Reflective Design: This heater is encompassed in a heat-and-shock resistant reflective Borosilicate glass tube, which allows it to reflect the surrounding aquarium colors, allowing it to blend in with the environment and enhance overall aesthetics.
  • Temperature Control: Computer-calibrated thermostat has an easy-to-adjust temperature control dial and an on/off blue indicator light to display when its in use.
  • Slim Profile: Ultra slim design allows for easy installation in your aquarium tank.
  • Recommended Size: M50 underwater heater is ideal for freshwater and saltwater aquariums up to 15 gallons. Each M-Series heater comes with a 3-year limited warranty.

Description

The Fluval M Submersible Aquarium Heater’s quality European manufacturing utilizes superior components and construction. The Fluval M50 Submersible Heater is ideal for use in freshwater and marine aquariums up to 15 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.


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 1.8 x 4.8 x 14.8 inches; 9.86 Ounces


Item model number ‏ : ‎ A781


Date First Available ‏ : ‎ August 19, 2004


Manufacturer ‏ : ‎ Rolf C. Hagen (USA) Corp.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 26 – May 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Works well at a reasonable price
Size: M50
Regarding Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums , it works well. Ive had it four months and so far so good. I can't know the accuracy of the temperature control because I have a cheap thermometer but it seems fine - at least its certainly within a couple degrees. ... show more
Reviewed in the United States on July 5, 2023 by halfdun

  • Working now
Size: M50
Keeps water warm until it doesn’t
Reviewed in the United States on July 9, 2023 by Mike Rey

  • Excellent Heater
Size: M200
I have Fluval Heaters on all my tanks. Wouldn't buy anything else.
Reviewed in the United States on July 2, 2023 by J. Groover

  • Working great
Size: M150
I’ve had this heater for about a month now and it’s working great. I haven’t had any issue with it and the temperature is right where I need it to be.
Reviewed in the United States on June 19, 2023 by Kindle Customer

  • It works!
Size: M150
I bought it to replace the one I had for about 10 years. Fast shipping and a high quality product.
Reviewed in the United States on June 22, 2023 by Aslacorte

  • Good
Size: M200
It seems a little low, two degrees below the setting. It's a little smaller than it should be. It takes a long time to bring the aquarium temperature up just a few degrees.
Reviewed in the United States on May 22, 2023 by Suz Suz

  • I use these for my quarantine tanks. They are great.
Size: M50
Nice to have handy… always easy to use and accurate heater.
Reviewed in the United States on June 18, 2023 by dankeith

  • Favorite heater
Size: M50
Works great and looks beautiful in the tank. I have 5 of these and haven't had an issue yet. My oldest 1 is 1.5 years old.
Reviewed in the United States on June 8, 2023 by Bethany

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