There are many unique design points that make this filter work better and more efficiently than other filters out there, and you won’t have to worry about cleaning and maintaining it all the time.
Fluval is a well-known brand of filters from Hagen, and they make great products that are reliable and have a lot of useful features. Fluval filters are more expensive than many other canister filter brands, but you definitely get what you pay for.
In our Fluval 406 review, we run this filter through its paces and go over all the pros and cons.
The 5 Huge Benefits Of The Fluval 406 External Canister Filter
4 media baskets capable of handling your choice of filtration media.
Cleaning and maintenance is super easy with Easy-open lock clamps and patented AquaStop valves.
sound-dampening impeller that makes this filter run nearly silent.
Amazing flow rate of 383 gph can handle up to 100 gallons.
The Fluval 406 includes a 3-year warranty so you’re covered if anything goes wrong.
What You Need To Know About The Fluval 406
The Fluval 406 Canister Filter improves on the success of their awesome 405 model and adds many additional benefits including better filter performance and easier setup, priming, and cleaning. The 406 also has lower maintenance requirements and quieter operation than the 405.
The Fluval 406 is part of their 06 line that includes the 106, 206 and 306. The 406 is the big boy of the bunch, and it can handle aquariums up to 100 gallons without breaking a sweat.
It also has an amazing flow rate of 383 gph (1450 l/h), so you know your water is going to be clear.
The flow rate on this thing is impressive, but it does have a downside.
The 406 does not come with a spray bar, so if you have more delicate fish or plants in your tank you’ll need to buy an add-on spray bar to spread out the water flow.
Fluval also included a sound-dampening impeller that makes this filter run nearly silent. You can still hear it running, but only if you’re paying attention to it, and it’s much quieter than any hang-on-back filters out there.
Some users have reported the impeller developing issues and becoming noisy after 6-12 months of operation, but Fluval includes a 3-year warranty with this product so you can be confident they stand behind it.
This filter has a unique design that gives it several advantages over other canister filters.
It has a square shape that can hold 35-40% more volume than round filters, so you can pack a lot more filtration media into the four media baskets.
This filter also directs the water flow through a complex path that maximizes contact with the filtration media. More contact with more media means the 406 is extremely effective at filtering water, and coupled with the huge flow rate this filter is a beast!
Many improvements over the already-great Fluval 405
Made with very high quality materials
Comes with a 3-year warranty
4 media baskets with included filtration media
Sound-dampening impeller means nearly silent operation
Holds 35-40% more volume than round filter designs
Easy-open lock clamps and patented AquaStop valves make cleaning a breeze
Solid-color ribbed hose is prone to catching debris and doesn’t allow you to check your water flow through the hose. It also feels cheap and is difficult to connect to accessories like in-line heaters and diffusers. This can easily be solved by buying different tubing.
Does not come with a spray bar. If you have delicate fish, you may need to purchase one to mitigate the powerful flow from this filter.
Some users have reported impeller issues after 6-12 months of use. However, with the 3 year warranty you’re covered.
More Popular Fluval Filters
Hands On Fluval 406 Review
The Fluval 406 comes with everything you need and more, including several types of filtration media, ribbed tubing, intake tube, output nozzle, intake strainer, AquaStop valve assembly, and a quick start manual.
This is a very well-engineered filter and it’s made with quality materials. The plastics feel very heavy-duty and sturdy, especially the lid lock clamps, which can break easily on cheaper filters. This filter is clearly made to last a long time.
The only exception here is the ribbed tubing, which feels cheap and is difficult to connect to accessories like inline heaters and diffusers.
The ribbing can also be prone to catching debris and getting clogged. This is only a minor issue, since you can easily go out and buy better-quality clear tubing.
Setup is not difficult if you’ve used a canister filter before, but like many other filters the confusing instructions makes everything seem more complicated than it is.
Save yourself some time and watch this video for setup instructions:
We came away very impressed with this filter after writing this Fluval 406 review.
The unique design and ridiculous flow rate means your water cycles through a ton of filtration media several times per hour, keeping your tank water so clear it will almost look like your fish are floating on air.
And, even though you won’t have to clean it as often as other filters, features such as easy-open lock clamps and the AquaStop valve makes cleaning incredibly easy.
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.