Search  for anything...

Fluval FX6 High Performance Aquarium Filter, Canister Filter for Aquariums up to 400 Gal.

  • Based on 5,391 reviews
Condition: New
Checking for product changes
$364.95 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – 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, Affirm, Afterpay, 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

30-day refund/replacement

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, Nov 28
Order within 15 hours and 58 minutes
Available payment plans shown during checkout

Size: FX6


Features

  • Multi-stage filter pumps out 925 US Gal (3,500 L) of water per hour, Smart Pump advanced microchip technology continuously monitors and optimizes pump performance
  • Self-starting just add water, plug in and Smart Pump will take over, trapped air auto-evacuated every 12 hours to ensure maximum efficiency
  • Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output and Smart Pump does the rest
  • Removable, stackable media baskets eliminate water bypass and hold a total of 1.5 US Gal (5.9 L) of media, all filter media included - mechanical, chemical and biological
  • Compact 21 in (53 cm) tall design - easily fits under most aquariums

Description

Fluval FX6 is a high performance canister filter with many outstanding features designed to make aquarium fish keeping easier and more convenient than ever. This super capacity yet compact canister filter has a pump output of 925 gallons of water and has a filter circulation of 563 GPH, which both work to produce cleaner and healthier results. Filtering material can easily be placed in a removable stack of media baskets, which is at the heart of Fluval's multistage filtration. The baskets are precision-engineered to eliminate water by-pass, making filtration more efficient. The baskets can hold a total of 1.5 gallons of media and can be stacked in the precise combination of layers that will work best for your aquarium. Each one is lined with a foam insert for effective mechanical pre-filtering. Instant-release T-handles let you lift and separate the baskets quickly and easily, making routine maintenance simple. FX6 also features Smart Pump Technology, which provides optimum filter performance. This advanced technological feature employs an electronic circuit board that continuously monitors the pump. Impeller speed and force are constantly measured to ensure power output and energy efficiency. It also manages the filter's self-starting feature and evacuates air that may enter or build up within the filtration system. On a 12-hour cycle, the pump will pause and allow trapped air to escape, ensuring the best filtration efficiency. Only 21" in height, FX6 fits under most aquariums. Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products. 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


Language ‏ : ‎ English


Product Dimensions ‏ : ‎ 15.1 x 15.6 x 20.7 inches; 19.9 Pounds


Item model number ‏ : ‎ A219


Date First Available ‏ : ‎ February 23, 2013


Manufacturer ‏ : ‎ Rolf C. Hagen (USA) Corp.


Best Sellers Rank: #8,115 in Pet Supplies (See Top 100 in Pet Supplies) #21 in Aquarium Filters


#21 in Aquarium Filters:


Customer Reviews: 4.5 4.5 out of 5 stars 5,391 ratings


Item Weight: 19.9 pounds


Manufacturer: Rolf C. Hagen (USA) Corp.


Language: English


Item model number: A219


Date First Available: February 23, 2013


Item Package Dimensions L x W x H: 20.5 x 15.62 x 15.31 inches


Item Dimensions LxWxH: 15.1 x 15.6 x 20.7 inches


Item Weight: 19.9 Pounds


Brand Name: Fluval


Target Audience Keyword: algae-eaters, bottom-feeder-fish, mollusks, goldfish, octopuses, snails, fish, cichlid-fish, sharks, rays, invertebrate-fish, betta-fish


Directions: See included instruction manual


Country of Origin: Italy


Warranty Description: 3 YEAR LIMITED WARRANTY


Model Name: Fluval FX6 High Performance Canister Filter


Color: Black


Size: FX6


Material: Rubber


Age Range Description: All Life Stages


Care Instructions: Regular Filter Maintenance


Number of Items: 1


Style: FX6 Filter


Breed Recommendation: All Breed Sizes


Included Components: Product in Descripton


Specific Uses for Product: Indoor


Frequently asked questions

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

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

Learn more about financing & leasing here.

Top Amazon Reviews


  • Easy to assemble, quiet, extremely efficient......
Size: FX6
I've been keeping tropical fish for over 50 years, and I know quality when I see it. In point of fact I've always been more of an Eheim man, until a friend told me about the Fx6. My complaint with Eheim was the fact that it can be a pain to prime, and I didn't want to go through that again, so I took the plunge and bought the Fx6 for my newly setup 125 gallon tank. When the package arrived I was shocked at the size of this thing. It reminded me of a canister vacuum cleaner. After a quick unboxing, and cursory accounting of parts, I began the process of assembling the filter at 5:15 PM. At 5:45 PM, I turned it on, watched it cycle, and then settle down to a almost silent hum. I didn't have to do anything but watch. It did it all. No sucking on the intake to get it to prime, no water splashing everywhere because you couldn't get the hose on fast enough, and no fuss at all. How nice is that? The outtake, while very strong, was easily adjustable, so the stream pointed upward, and away from the middle of the tank. You cannot hear one little drop of splashing water. I will be keeping Discus and they don't like hurricane water. Like most new tanks mine was quite cloudy, and had been for a couple of days before I started the filter. Overnight the cloudiness completely disappeared and the water is almost crystal clear. Bottom line: while expensive it's one of those "you get what you pay for" situations and I consider this easy to assemble, simple to start, highly efficient filter getting what I paid for. I recommend it most heartily for the reasons I have mentioned. Incredibly easy to assemble and starting is a matter of plugging it in. Very quiet and by all appearances very, very efficient. If you have one of these there is no need whatsoever to use an additional filter on a large-100-200 gallon tank. This big boy will take care of everything for you. ... show more
Reviewed in the United States on September 12, 2015 by Michael J. Scott

  • Easy to use, powerful enough pump to get the water moving
Size: FX6
This pump was a good purchase for our turtle pond/tank. The motor is powerful enough there is no priming needed (nice change from the old pump) and if it gets turned off is able to get itself going again within a few minutes. It hasn't cleaned the water as well as expected but does a great job otherwise. Very impressed by how well it functions. Pump and filter in one! Filter pads are wash and reuse. Very quiet motor. ... show more
Reviewed in the United States on July 31, 2024 by Happy Amazon Customer

  • The best filter we have ever had
Size: FX6
We have had hang on backs for ever..this is a game changer. Yes it is pricey but in my opinion it is worth it. We are using this for our 75 gallon and its amazing. We have it on the bottom shelf of a stand and had to put Styrofoam under it so that it didn't rattle but that was an easy fix. Now it is whisper quiet and wonderful. Our tank looks beautiful and clear and looks much less cluttered then with the hang on back filters and their many wires and bulkiness. It was somewhat simple to set up as long as you take the time to read the instructions carefully. ... show more
Reviewed in the United States on August 16, 2024 by William & Ana

  • Works well, don’t repeat my mistake
Size: FX4
I purchased this filter for a 55 gallon aquarium with goldfish due to the large bio load. Thinking I’d save some time, I watched someone’s YouTube video for set up Instead of reading the The filter worked extremely well for about 6 months when it started making a lot of noise Then it began overheating periodically and finally just stopped working altogether. After lot of thought and research, I decided to purchase a second one. While setting it up, I wanted to double check something with the tubing. I’m so glad I did! It clearly states that the tubing should have no loops or slack as it overworks the motor. Well, my first one had quite a bit of slack with both the intake output tubing. That was completely my fault! Here are a few tips that may help you from my experience: 1. Make sure the metal clamp is very secure on the white part of the tubing closest to the open/shut valves. 2. When securing tubing to the aquarium, there are three clips with the bracket. Do the middle clip first, then the back one and lastly the one inside the aquarium. 3. The red open/shut valves are super challenging to turn and they don’t loosen with time. I’m sure this is a good safety feature, but I actually cut my finger trying to close them. I recommend using a towel or something to protect your hand. 4. Make sure you have fully tightened the white tops of the screws holding the lid on. If you don’t, even one loose one will cause water to pour out. 5. Make sure there’s no slack in the tubing! Don’t repeat my mistake and burn out your motor! The videos are quite helpful, but definitely read the instructions! Second filter is doing very well! ... show more
Reviewed in the United States on July 13, 2024 by Eldy

Can't find a product?

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