Fluval 406 VS 407- Know Your Preference

In the case of aquarium filters, there are a lot of choices. And we know what a hassle it is to choose the right one from among them.

So you want to know about Fluval 406 vs 407?

There are quite some differences between the Fluval 406 and 407. The Fluval 407 has a big foam max sponge for better filtration. It also has double the amount of carbon than 406. Additionally, it has a rubber foot stabilizer, which can’t be found in the 406, although the Fluval 406 costs less.

But knowing only this much isn’t enough. But don’t worry because we’ve written a whole article explaining it in detail. 

Fluval 406 VS 407- Quick Review

Fluval 406 VS 407

Both the Fluval 406 and 407 are some of the best aquarium filters out there. However, we know how important it is to choose the right product specifically for your needs.

Thus, we have tried to differentiate them based on their core factors.

FactorsFluval 406Fluval 407
Bio Foam Max SpongeNo2x
Rubber Feet StabilizerNoYes

However, this is just a brief summary. That’s why we have taken the initiative to elaborate on them further. 

Fluval 406 VS 407- Detailed Review

Before choosing a product, we know how important it is to know the little details. That’s why we’ve done the research for you. Here we have tried to mention all the little details needed for you to make the right decision.

So, be sure to stick with us. 

Bio Foam Max Sponge

While maintaining your aquarium, filtration is the first thing to consider. And the Bio Foam Max Sponge has taken that to a new level.

So, what does Bio Foam Max Sponge do?

It’s mainly a 2-in-1 biological and mechanical media equipped with a rippled surface design. Thus, it provides up to 30% more area for efficient waste and debris filtering. It ensures improved biological filtration for your aquarium.

So, which one of our filters has this amazing feature? The answer is Fluval 407. Equipped with Bio Foam Max Sponge, it ensures better filtration for your aquarium. That is compared to the Fluval 406.

It can be used both in freshwater and saltwater aquariums. It works as the perfect surface for the growth of nitrifying beneficial bacteria. Furthermore, it prevents premature clogging, which extends the life of filter media.

Thus, these extra benefits are sure to impress any buyer.

Although in terms of filtration capacity, the Fluval 406 is in no way a bad choice. But if you are interested in something that’s always one step ahead, choose the Fluval 407. 


The next thing to consider is the amount of carbon in these filters. But for that, we need to know why it is necessary. So, what does carbon do aquarium filter?

Numerous dissolved pollutants, including chloramine, chlorine, tannins, and phenols, are adsorbed by activated carbon. Among these, chlorine and tannins change the color of the water. And the phenol causes the odor. It will prevent aquarium water from turning yellow over time.

Although there are some things to consider in this case. If activated carbon is exposed to a lot of aquarium trash, it will quickly lose its potency.

As a result, carbon should be added to the filter after the mechanical filtration media.

In this case, the carbon is already added to the filter. Thus, it is important to keep your aquarium clean and free of debris. And that is on a regular basis.

Also, the activated carbon absorbs a variety of fish sickness treatments. Therefore, all carbon in the filter needs to be eliminated before administering medication to ill fish. In this case, it’s advised to remove the filter while treating your fish.

But in general, the carbon in the filter is really helpful. And more of it is sure to help your filtration. So, which one has more carbon in it? The answer is Fluval 407. It almost doubles the carbon footprint of 406.

So, if you’re looking for enhanced filtration, the added carbon in 407 is what you need.

Rubber Feet Stabilizer

Rubber Feet Stabilizer

The next is the rubber foot stabilizer. It is a feature that is only available on the Fluval 407. So, what does a rubber fleet stabilizer do?

The stabilizer was created especially for aquariums. It comprises a synergistic mixture of facultative, aerobic, and anaerobic bacteria. It helps break down waste organics, ammonia, nitrite, and nitrate. The bacteria used by the stabilizer don’t fix sulfur and do not release harmful hydrogen sulfide.

This implies the importance of the stabilizer. Thus, if you want these benefits, go for the Fluval 407.


Lastly, price is a factor all of us consider before purchasing something. So the question here is, which one costs less? And the answer is Fluval 406.

The Fluval 406 is the previous model of the Fluval 407. Thus, it has some shortcomings compared to 407. Some features, including the ones mentioned above in the article, are absent in the 406.

Thus, the price range differs a bit. Although, the catch here is that you can get the Fluval 407 for only 10$-20$ more. It’s not a huge increase that should make the buyers worried about getting it or not.

So, if you can afford the extra 20 bucks, then Fluval 407 is the right choice.

On the other hand, you might be content with the Fluval 406. Then surely you can save that extra twenty. 

What to Choose?

By now, hopefully, you know which one is the right choice for you. If you prefer the new Big Foam Max Sponge, get the Fluval 407. It also has more carbon. Both of these will ensure better filtration for your aquarium.


How many gallons is Fluval 407 good for?

The Fluval 407 is the best aquarium filter for tanks ranging from 50 to 100 gallons. The answers to these questions depend on the dimensions and contents of your aquarium. Canister filters employ pressure to push water through the filter. That’s unlike power filters, which allow water to flow through.

How long does Fluval 406 last?

Due to its square shape, the filter medium will have the greatest possible contact. That is with the aquarium water. This improves the filtration efficiency of your Fluval 406 canister filter. And that is to the greatest extent. Fluval filters should serve you for many years to come.

How often should I clean the fish tank with a filter?

You ought to clean the filter cartridges once every month. And, every 6 months, you should perform a thorough cleaning of the tank. and all related equipment twice a year. This entails unplugging everything and inspecting it. Make sure that filters, pumps, and other equipment are working properly.

Is Fluval 407 Worth It

You know; The Fluval 407 is a canister filter designed for aquariums up to 100 gallons in size. You need to consider some factors to know if it’s worth or not.

Firstly, if you have a tank that is smaller than 100 gallons, the Fluval 407 may be overkill and you may not need such a powerful filter. In that case, you might want to consider a smaller, less expensive filter that is more appropriate for the size of your tank.

Secondly, if you have a larger tank and are looking for a high-quality, reliable canister filter, the Fluval 407 is definitely worth considering.

Is Fluval 407 Or Fx4 Better?

FeatureFluval 407Fluval FX4
Flow rate383 GPH500 GPH
Aquarium sizeUp to 100 gallonsUp to 250 gallons
Noise levelVery quietVery quiet
Dimensions7.5 x 7 x 16.5 inches15.75 x 15.75 x 17.5 inches
PriceLess expensive than FX4More expensive than 407

The Fluval FX4 is a better choice for larger aquariums up to 250 gallons, while the Fluval 407 is a good choice for smaller aquariums up to 100 gallons.

The Fluval FX4 has a higher flow rate and can handle more water volume, but it’s also more expensive than the Fluval 407. The best choice for you depends on the size of your aquarium and your budget.

Bottom Line!!

Now we’d like to hear your opinion.

Were we able to solve all your queries regarding Fluval 406 vs 407?

Here’s an extra tip for you. Swap out your ceramic rings every 6 months. 

If there’s anything else on your mind, be sure to comment down below.

Howard Parker

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