The Fluval FX6 and FX4 are beasts and they won’t let you down.
The Fx6 looks like someone took a shop vac and converted it into a canister filter, this thing is absolutely HUGE! The FX4 is pretty big as well.
But before we get in to the details of the review, here are just 3 of the key features these monsters offer;
Self-starting canister filter: Just add water and plug it in. The filter does the rest. No more siphoning water, no more push button priming this filter does everything itself.
Smart Pump Technology: Every 12 hours the filter will stop, allow any trapped air to escape, and then restart. This ensures the best filtration efficiency at all times.
Seamless Water Changes: The FX6 & FX4 both feature a utility valve at the base of the unit which can be used to empty the unit and complete your water changes by draining and refilling right from the valve.
The 7 Best Features Of The FX6 & FX4 That Make Them Beasts!
Self starting feature, just add water and plug it in. The filter primes and starts itself.
Easily lift out all 3 HUGE media trays for cleaning with “Tote Handles” that pull out.
Energy efficient motor assembly uses 10% less power than previous models.
Quickly do water changes and clean your gravel: just attach a hose to the utility valve located at the base and the filter does the rest. When your done you can store the extra hosing with the easy storage clips located on the canister lid. Check out the video below for a demonstration.
Prevent leaks with large locking clamps that secure the motor and canister in place.
Every 12 hours the filter will stop, allow any trapped air to escape, and then restart. This ensures the best filtration efficiency at all times.
Don’t worry about problems it comes with a 3 year warranty and built with heavy duty construction.
Fluval Aquastop Valve
Fluval Utility Valve
The best feature of the FX6 (Update July 6, 2016)
Is the ability to attach the all-new Fluval FX Gravel Vac (compatible with FX4, FX5 and FX6 model filters), which offers powered and convenient substrate cleaning for your aquarium.
Watch this video showing how the FX6 simplifies cleaning your gravel.
Quick Overview Of The Fluval FX6 & FX4 Canister Filters
Value For The Money99
How Quiet Is The Filter97
Ease Of Installation100
Ease Of Maintenance95
Flexibility, Flow Rate, Input, Output96
Fluval FX6 & FX4 What You Really Need To Know?
The massive Fluval FX6 canister filter is a multi-stage filter that is good for fresh and saltwater aquarium up to 1500 L (400 US Gal).
One of the great features of the FX6 is its highly efficient motor which consumes 10% less power than the FX5.
The FX6 brings back the smart pump technology from the FX5 models which stops the filter every 12 hours to maintain optimal filter performance.
The intake tube is telescopic so you can adjust the length to your tank and also has an anti-clog strainer to keep the water flowing.
Everything from the valves, media tray, intake/outtake tubes and the canister itself are all well-built and super durable.
Not many changes from the FX5. BUT it’s difficult to improve much on an already brilliant filter.
The size of these units means you need a large place to store them. However, when you think of the filtration capacity these beasts provide it’s worth the trade off.
First off the FX6 is an awesome filter but if you already have an FX5 then there is really no need to upgrade.
The main changes are colour aesthetics and the fasteners used to be rubber.
However, if you are looking for a new filter and the price for the FX5 & FX6 are within the same range, then I would suggest you go with the FX6.
In my opinion it’s the best canister filter made right now, if you have the money and you want a filter that does everything itself then the FX6 is the way to go.
Seamless Water Changes (Update July 6, 2016):
Fluval recently updated the FX6 & FX4 with a built-in water change system, multi-stage filtration, enhanced media capacity and even an optional powered FX Gravel Vac with independent filtering capability.
Check out this video showing all the new features of the Fluval FX6 & FX4
You can also check out this Fluval FX6 unboxing by Stuff & Us. Then continue reading below to see how to set up this filter.
Fluval FX6 Setup
This is the easiest canister filter I have ever set up.
As soon as you plug the filter in, the canister fills with water from your aquarium.
It pumps for 1 minute, pauses for 2 minutes to evacuate air from the system, then immediately begins the filtering process.
Check out this video from Big Al’s where they go over some of the key features, but then show you how easy it is to set up this beast of a canister filter.
Fluval fx6 media setup:
The Fluval FX6 comes with all the media you will need to run the filter, refer to the product list above for all the media included.
The FX6 comes with 3 huge media trays which all have circular sponges around the perimeter from the top to the bottom around 2″ thick. The FX4 to contrast has only 2 trays.
Here are two cross sections of both filters so you can see how the media stacks up when comparing the two filters.
Fluval FX6 3 Media Trays
Fluval FX4 2 Media Trays
It’s also important to note that Fluval has provided a Basket in Basket media tray design which effectvely allows you to proivde up to 6 stages of filtration for the FX6 and 5 stages of filtration for the FX4.
Here is a breakdown of each tray and the 6 stages of filtration possible with the FX6;
Top Media Tray #1
Middle Media Tray #2
Bio Max Rings
Bio Max Rings
Bottom Media Tray #3
This may look like 8 stages, but the Foam is counted as one stage as it sits in the outer ring of each tray and when stacked (See the pictures above) forms one continuous stage of mechanical filtration.
Here is a suggested set up for the tray’s that could work well.
However, always do your own research to ensure the media you use won’t harm your fish.
First tray: Clearmax and Purigen
Second tray: Pond matrix
Third tray: Chemi pure
Bottom: Filtering pad for polishing, same on top.
Tip: To get your water really clear use Poly-Fil. Make sure that it’s 100% polyester. You can get this stuff really cheap on amazon. Then simply surround your media with this stuff. Lay it on top as well.
The Fluval FX6 gets amazing ratings in all categories and all stores.
Check out some of the ratings below.
You can feel confident that you are picking a winner, whether you are a buying your first canister filter or if you’ve been around the block a few times.
Jack Dempsey has over 20 years of experience with freshwater aquariums, his goal is to help beginners avoid the biggest mistakes when getting started. If you find something helpful please share it on your favourite social network. If you need help with anything send Jack a question.