Best selling Aquarium filters + Accessories from Fluval

On this page you'll find a ranking of the best Fluval products in this category. To give you a quick overview, we've already ranked the most important information about the products for you.

1. Fluval Activated carbon

Fluval activated carbon is a highly effective filter material specifically designed for use in aquariums. It features a proven formulation that has low ash content and an extremely porous structure. These properties allow for efficient removal of heavy metals, unpleasant odors, water discoloration, and organic pollutants. The activated carbon can be used in both freshwater and saltwater aquariums, making it a versatile solution for aquarium owners looking to improve the water quality in their tanks. Weighing only 16 grams per package, it is easy to handle and integrate.

- Low ash content for optimal filtration performance
- Effective removal of organic pollutants and odors
- Suitable for freshwater and saltwater aquariums. 

2. Fluval Spec BioMax

BioMax was specially designed for Fluval Spec aquariums and provides important biological filtration. BioMax has a huge surface area on which beneficial bacteria can optimally colonise. This contributes to the decomposition of fish waste and thus to a healthier aquarium environment. 

3. Fluval Foam prefilter

Filtration at the highest level. The FX external filter from Fluval features performance-optimized, patented Smart Pump technology, complex multi-stage filtration, an integrated powerful water change system, and a basket stacking arrangement for greater filter media capacity. The brand new FX4 filter builds on the powerful FX platform and is the compact "little brother" of the FX6 filter. It is the ideal choice for aquarists with aquariums up to 1000 liters of water.

Faster cleaning. The FX6 filter is known for its strength and durability, filtering an impressive 3500 l/h in aquariums with up to 1500 liters of water. This level of performance cleans the tank more thoroughly and quickly. A larger amount of debris is captured, resulting in less frequent maintenance.

The FX series features a multifunctional drain valve at the bottom of the filter container. Thanks to this valve, water can drain from the filter container, leak-free water changes can be performed, and the water can be refilled directly without altering the setup of your tank and without disturbing the aquarium inhabitants. 

4. Fluval Fx6 3500l/H

The Fluval FX6 external filter allows for precise stacking of filter media in the combination that is most suitable for the aquarium, thanks to its multi-stage filtration system. This ensures unrestricted flexibility to create and maintain the ideal environment for the fish. The enormous capacity and the powerful integrated motor, which circulates a full 2300 liters of water per hour, enable precise adjustment of water properties in aquariums up to 1500 liters. It can hold up to 5.9 liters of filter media while remaining compact enough to fit in almost any aquarium cabinet. With Fluval's unique intelligent pump technology, simply plugging the filter into the power supply activates the self-priming system, and the filter starts automatically. The filter then fills with water, briefly pauses to release trapped air, and immediately begins the filtration process. Filtration continues until the unit is unplugged. Every 12 hours, the filter pauses to release any air that has entered the system, maintaining the vacuum necessary for maximum efficiency. Additionally, the Fluval external filter features a connection for refilling the aquarium. 

5. Fluval Foam filter element U4

The Fluval Foam Pad captures large particles and debris, providing effective mechanical filtration, which is a crucial first stage in the filtration process. It is specifically designed to fit perfectly in the filter chamber and prevent bypassing of dirt.

The foam pad has a pore size that allows for efficient water flow, reduced clogging, and long-lasting filtration. Suitable for freshwater, marine, or reptile environments. 

6. Fluval Aktivkohlenfilter

This premium activated carbon has been specifically designed for Fluval Spec aquariums and provides essential chemical filtration. It features a massive surface area to absorb impurities. It effectively removes heavy metals, odors, discoloration, and contaminants. The result is crystal clear water in your aquarium.

Suitable for:
Fluval Flex, 34 liters
Fluval Flex, 57 liters
Fluval Flex, 123 liters
Fluval Spec I, 7.6 liters
Fluval Spec III, 10 liters
Fluval Spec V, 19 liters. 

7. Fluval Poly activated carbon U4

The Fluval Poly/Carbon cartridge features two unique filter sides that together provide thorough and effective chemical filtration, which is a crucial second stage in the filtration process. The polyester filter pad side removes fine residues and impurities. The carbon side filters out harmful liquid substances, dyes, and odors. Key features: The polyester/carbon cartridge ensures thorough and effective chemical filtration. The polyester filter pad side removes fine deposits and impurities. The carbon side filters out harmful liquid substances, dyes, and odors. Suitable for freshwater, marine, or reptile environments. Includes 2 poly/carbon cartridges for Fluval underwater filters. 

8. Fluval 207 Performance

Redefined and redesigned - the world's best-selling external filter Fast Italian precision pump High performance, low energy consumption Vertical primary filter for better mechanical filtration Improved water shut-off valve Vibrating rubber sole with fillers, tubes sold stabilisers. Made in Italy on behalf of the German manufacturer Hagen. 

9. Fluval Poly activated carbon U2

The Fluval Poly/Activated Carbon Insert features two unique filter sides that ensure thorough and effective chemical filtration – the important second phase in the filtration process. The polyester side filters out fine dirt particles and impurities. The activated carbon side filters out harmful liquids, discolorations, and odors. 

10. Fluval Bio-Max

Fluval Bio-Max for internal filters. The Fluval Bio-Max for internal filters is available in the following versions: U2, U3, U4. The Fluval Bio-Max bio rings feature a complex pore system that creates an optimal environment for the colonization of beneficial bacteria. Another advantage is that Fluval Bio-Max also reduces ammonia and nitrate. Packaging content: 170 g each. 

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