Best Nano Innenfilter 2026

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Last Updated - 03.02.2026

Best Choice

01

Fluval

Fluval U Internal Filter

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29% Off
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The media cartridge catches more dirt.
Flip-top lid allows quick and easy access to the filter cartridge.
Easy-grip water control paddle.
Designed for aquariums up to 55 litres (1.5 US gallons).
BioMax biological media included.

29,99 € 41,99 €(29% Off off)
02

Forever Speed

Forever Speed Aquarium Filter with UVC Clarifier Aquarium Internal Filter 6 W, 5-in-1 Nano Aquarium Filter for 20L-1500L Aquariums (8W 500L/H)

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Removable filter: this aquarium filter - a practical inner filter - is also suitable as a nano aquarium filter for limited installation space (e.g. narrow interiors of small aquariums or cramped placement zones). If removing a filter section is enough for adjustment - without device replacement - so the core function of the UV clarifier aquarium, UVC clarifier aquarium as well as the aquarium UV filter is maintained with easy installation.
Four modes: this aquarium filter with built-in UVC clarifier aquarium - a versatile aquarium filter and practical aquarium internal filter - has 4 modes: rain, ventilation, vertical, horizontal. Its aquarium filter pump must be completely submerged and is ideal for fish brood breeding, turtle keeping and sensitive aquarium inhabitants.
Built-in UV lamp: this aquarium filter - a powerful aquarium filter with UV - combines the advantages of an internal filter pump and aquarium pump with filter with an integrated UVC clarifier aquarium. It eliminates micro-organisms, inhibits algae/moss growth and suppresses viruses, has a timer with 4 time modes (4H/8H/12H/24H) and can be removed separately when not in use.
Adjustable oxygen content: this aquarium filter - a versatile filter aquarium as well as practical aquarium filter - is suitable as an aquarium filter 60 L and aquarium internal filter, with a flow rate of 500 L/h for the aquarium pump of 20-1500 L aquarium volume for flexible adjustment of the oxygen content in the water. Precise adjustment from gentle oxygen supply for nano basins to powerful oxygen distribution for large aquariums with demanding aquatic inhabitants.
5-in-1 multifunctional filter: this aquarium filter - a powerful filter aquarium - is an internal filter with UV clarifier that also optimises water movement as a practical aquarium pump. It is versatile as an internal filter aquarium and aquarium internal filter, combines circulation, sterilisation, oxygen enrichment, rain function and wave formation, reliably removes impurities and increases oxygen content to create a healthy aquarium environment.

26,99 €
03

Aquael

Aquael Pat Mini 5905546061339

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Only 4 Watt power consumption
Includes nozzle for oxygenation
400 litres per hour of circulation

13,95 €
Value for Money

04

JBL

ProCristal I30

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13% Off
9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

TÜV tested, energy-saving operation with 3.7 W, expandable with filter modules
No danger for small fish and shrimp: no suction due to fine surface, water outlet can be rotated into any position, suitable for any aquarium from 14 cm high
Internal filter for aquariums from 10 - 40 l volume, with adjustable pump capacity up to 200 l/h, for crystal clear and oxygen-rich water
Easy to install: press the filter with suction cups in the desired place, positioning with water outlet approx. 2 cm below the water surface
Box contents: 1x JBL JBL ProCristal i 30, internal filter for aquariums, with filter sponge, activated carbon cartridge, air intake manifold, 3 suction cups, 1.5 m long cable, dimensions: 7.6 x 4.1 x 12.0 cm, 6099000

18,59 € 21,46 €(13% Off off)
05

Juwel Aquarium

Juwel Aquarium - Bioflow Internal Filter System One - Suitable for Aquariums up to 40 cm Height, up to 80 Litres

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Powerful Bioflow internal filter
Internal filter for aquariums up to approx. 80 litre volume
Includes Juwel Eccoflow 300 pump

19,99 €
06

NICREW

NICREW Aquarium Internal Filter, Adjustable Flow Aquarium Filter with Water Pump for Aquariums up to 20 L, Quiet, 3.5 W

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

WIDE APPLICATIONS Perfect for irregularly shaped or flat habitats - can be mounted horizontally or vertically and fully submerged
User-friendly design: the water inlet is designed with relatively tight grids to effectively prevent fish and shrimp from entering the filter
Easy to use: quick to assemble and disassemble and comes with five suction cups for safe installation in the aquarium
Dual Filter System The activated carbon and foam, which form the best filtration system for small aquariums (sold separately), ensure good oxygen supply, clear water and a healthy environment
3 IN 1 FILTER The Nicrew filter is equipped with an aquarium pump and double filter media. It can filter the water, add oxygen while creating a fountain, which contributes to the surface movement of the water and improves ventilation

12,99 €
07

Tetra

Tetra IN Plus aquarium inner filter - filter for clear, healthy water, easy care, mechanical, biological and chemical filtering, various sizes., Single

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With practical filter medium removal device for clean handling
When cleaning, the device remains in the aquarium
This means that a filter sponge can always remain in the filter chamber during cleaning - the loss of beneficial bacteria is thus minimised
Note: The cleaning interval depends on the trimming of the aquarium and must be adjusted if necessary.
Continuous flow speed control to adapt to the aquarium
All internal filters have two-part filter chambers

21,99 €
08

AquaOne

AquaOne Aquarium Filter JP-093 I Internal Filter for Aquariums up to 60 Litres I Pump with 450 L/h Flow I Aquarium Filter for Freshwater and Saltwater Basins

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Your trusted partner: As a long-standing aquarium, pool and pond retailer, we advise you on all topics at any time. Don't be afraid to write to us :)
Suitable for freshwater and sea water aquariums: the aquarium filter pump is pressed against the window with six suction cups in the aquarium. The exhaust pipe can be swivelled up to 90° and you can clean it with an integrated cleaning slider without removing the filter from the aquarium.
Highest quality: our aquarium pump JP-093 is suitable for pools up to 60 litres and has a flow of max. 450L/H With a rotary wheel on the filter, the flow rate of the filter can be adjusted.
Family companies from Worms: aquariums, pool and garden ponds are our life! It is very important to us that we can also use our products ourselves. That's why expertise is very important to us.
Advantages: the filter is very quiet and very energy-saving due to the low power supply.

16,95 €
09

TRIXIE

Trixie Aquarium Inner Filter, 5 W

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Various outlet units for individual use; easy to clean
Two-phase cleaning: organic by sponge and chemically through activated carbon filter
Powerful and quiet - TÜV/GS approved
Matching suction cups (pack of 12): Item 86101
Filtering possible with parallel oxygen supply

8,58 €
10

Forever Speed

Forever Speed Aquarium Filter with UVC Clarifier Aquarium Internal Filter 6 W, 5-in-1 Nano Aquarium Filter for 20L-1500L Aquariums (8W 500L/H)

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Removable filter: this aquarium filter - a practical inner filter - is also suitable as a nano aquarium filter for limited installation space (e.g. narrow interiors of small aquariums or cramped placement zones). If removing a filter section is enough for adjustment - without device replacement - so the core function of the UV clarifier aquarium, UVC clarifier aquarium as well as the aquarium UV filter is maintained with easy installation.
Four modes: this aquarium filter with built-in UVC clarifier aquarium - a versatile aquarium filter and practical aquarium internal filter - has 4 modes: rain, ventilation, vertical, horizontal. Its aquarium filter pump must be completely submerged and is ideal for fish brood breeding, turtle keeping and sensitive aquarium inhabitants.
Built-in UV lamp: this aquarium filter - a powerful aquarium filter with UV - combines the advantages of an internal filter pump and aquarium pump with filter with an integrated UVC clarifier aquarium. It eliminates micro-organisms, inhibits algae/moss growth and suppresses viruses, has a timer with 4 time modes (4H/8H/12H/24H) and can be removed separately when not in use.
Adjustable oxygen content: this aquarium filter - a versatile filter aquarium as well as practical aquarium filter - is suitable as an aquarium filter 60 L and aquarium internal filter, with a flow rate of 500 L/h for the aquarium pump of 20-1500 L aquarium volume for flexible adjustment of the oxygen content in the water. Precise adjustment from gentle oxygen supply for nano basins to powerful oxygen distribution for large aquariums with demanding aquatic inhabitants.
5-in-1 multifunctional filter: this aquarium filter - a powerful filter aquarium - is an internal filter with UV clarifier that also optimises water movement as a practical aquarium pump. It is versatile as an internal filter aquarium and aquarium internal filter, combines circulation, sterilisation, oxygen enrichment, rain function and wave formation, reliably removes impurities and increases oxygen content to create a healthy aquarium environment.

22,99 €