Search  for anything...
Fluval

Fluval M150 Submersible Heater, 150-Watt Heater for Aquariums up to 45 Gal., A783

    • Based on 4,840 reviews
Condition: New
Checking for product changes
$30.88 Why this price?

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 9
Order within 2 hours and 26 minutes
Available payment plans shown during checkout

Size: M150


Features

  • 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 sick
  • Easy to install with slim profile tube for easy placement
  • 150-watt heater suitable for freshwater and saltwater aquariums up to 45 gallons with a 3-year warranty

Description

The Fluval M Submersible Aquarium Heater’s quality European manufacturing utilizes superior components and construction. The Fluval M150 Submersible Heater is ideal for use in freshwater and marine aquariums up to 45 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 ‏ : ‎ 1.25 x 1.25 x 13 inches; 10.58 ounces


Item model number ‏ : ‎ A783


Date First Available ‏ : ‎ August 19, 2004


Manufacturer ‏ : ‎ Rolf C. Hagen (USA) Corp.


Best Sellers Rank: #4,934 in Pet Supplies (See Top 100 in Pet Supplies) #8 in Aquarium Heaters


#8 in Aquarium Heaters:


Customer Reviews: 4.6 4.6 out of 5 stars 4,840 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 9

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.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Very good heater!
Size: M100
I have this heater in my 30 gallon aquarium and it does a great job and keeping temp. I like the mount that comes with it way more than other suction mounts that come most other heaters. Very sturdy and made very well. I would definitely buy again!
Reviewed in the United States on February 23, 2024 by Dean
    • Has not let me down
Size: M150
I have several M series heaters. They have all been accurate and reliable. Big and shiny and not for aquascapers, but great for people who just keep fish.
Reviewed in the United States on February 18, 2024 by Nathan Avery
    • Works great
Size: M50
Keeps the tank at a steady temp and doesn’t fluctuate much
Reviewed in the United States on March 1, 2024 by Brittany Strong
    • Great, long lasting heater.
Size: M100
Review Image by Liz Liz
I used Amazon to purchase my second Fluval 100w submersible heater, because it was a better price Tha PetSmart. My first one, I purchased at a local pet store about 6 years ago, and didn't fail me once. My original heater was used everyday, not once was it turned off, except with water changes and other maintenence. It kept my tropical fish warm and happy year round at 72°. I never realized that the heater was not fully submersible, just to the two water lines...my original heater I kept just about dully submerged in my tank, but never had any issues in doing this. The only problem I ran into, eventually I could not read the temperature gauge for the dial anymore because it came off or become covered in algae. My new one I will be sure not to fully submerge it, but it will still be over the water line, otherwise it wouldn't fit under the hood. I could have replaced the heater sooner, and wish I had...the week before my old one broke, I had put it down on the list of things to get. Pretty lucky that the heater didn't hurt any of my fish when it busted, it just ended up cracking, and the bottom fell off. This doesn't falter decision on my rating though, the heater lasted longer in my tank than any other I have used in the past, and I have kept aquariums for about 15 years now. ... show more
Reviewed in the United States on November 3, 2017 by Liz Liz
    • Good design, erratic calibration
Size: M200
(SECOND UPDATE, 10/19/12) After a year of use -- completely submerged -- the second heater continues to work as well as it did when new. Some samples, like my first one, may suffer from initial quality control issues, but Fluval M's remain excellent heaters on balance, holding their own against any on the market (and I've used most brands at one time or another). (UPDATED 11/9/11): These are nicely designed, sturdy heaters with strong borosilicate glass, quality interior components, and sleek contemporary appearance. Unfortunately, Fluval's "computer calibrated thermostat and 16 point quality assurance" do not necessarily deliver the promise of their engineering. The first one I got was defective out of the box. No matter how I adjusted the controls, the lowest temperature it would maintain was 84 F., much too high for most fish on a sustained basis. The thermostat is of high quality, with less temperature variation than most, but the poor calibration made that irrelevant. Since Fluval has been a reliable brand for decades, I decided to try a another one. The second Fluval M has worked perfectly so far (about three weeks). The preset is off a couple of degrees, but that is within normal tolerance for aquarium heaters. I would certainly recommend one of these, provided it is purchased from a source (like Amazon) with a liberal return policy in case you receive a defective sample. My guess is that if you get a good one initially, it will provide many years of reliable service. As an aside, I'd like to offer some comments about a couple of other matters mentioned by various reviewers: Contrary to what Fluval implies, they don't disappear into their surroundings in the aquarium. They are nice looking, but quite conspicuous, more so than the dull charcoal gray finishes commonly used. They are no easier to hide from view than any of the eight other heaters I currently employ. Fluvals are as fully submersible as any other "submersible" heater. Fluval representatives have stated that the instructions and high water line indicator were required by Canadian government regulations, presumably as a safety precaution. (Fluval's distributor is headquartered in Montreal.) It is prudent to keep the top of any submersible heater above water, and I do so when the aquarium design permits, but because of the layout of the tank it is in, this one is fully submerged. I could readily switch it to one of my other tanks where the top would be above water, but haven't bothered. I don't believe this "issue" should be a reason to avoid the Fluval heater. ... show more
Reviewed in the United States on October 17, 2011 by Macfan 424
    • Great brand great heater
Size: M150
It works great and lasts longer than some other heaters. But like all heaters they do go out after some time. I like how easy it is to set but wish it had a digital display showing the temp instead but that’s a personal preference. The suction cups is amazing and I haven’t had any issues with them coming undone this is a big thing for me. I would recommend this product. Also it holds the temperature at the correct temperature that I set it too so no complaints. ... show more
Reviewed in the United States on December 1, 2023 by Jonathan Fickel
    • Fluval quality
Size: M50
Using for my 15 gallon Fluval Flex. No issues. It did come loose in the box. It apparently pops out of the plastic bubble cardboard packaging of Fluval. Fortunately it was not damaged. That would be my only caution about ordering.
Reviewed in the United States on February 21, 2024 by Bill Robinson
    • Trusted heater
Size: M150
I exclusively run these heaters on all of my aquariums as they have proven to be very reliable, I have one that is going on two years old and it works like new.
Reviewed in the United States on February 19, 2024 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.