Product guide

Fluval U2 Filter Media Value Pack A348

Fluval U2 Filter Media Value Pack A348 is a replacement media kit described for Fluval U Series internal aquarium filters. Its claimed combination covers mechanical, biological and carbon filtration, with enough media stated to last up to six months.

At a glance

Bio-Foam is described as trapping larger waste and debris while maintaining water flow.
BioMax is presented as biological media that supports beneficial bacteria and the nitrogen cycle.
The Poly-Carb cartridge combines a polyester layer for fine particles with activated carbon for toxins, discolouration and odours.
The listing claims the pack contains media for up to six months of filter maintenance.

Price

£13.79Save 21%

Reference price: ~~£17.49~~

Price checked: 12 Nov 2026

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Often bought together

Fluval U2 Internal Aquarium Filter – Up to 110 Litre Fish Tanks, 400 L/H Adjustable Flow, 3-Stage Filtration with BioMax, Freshwater, Marine & Reptile Use

£32.99

Fluval U2 Internal Filter Foam Pad

£5.02

Pros and cons

Pros

One kit brings together mechanical, biological and carbon media for the stated filter range.
The three media types address different filtration tasks rather than relying on a single replacement element.
Customer feedback reports positive impressions of quality, value and functionality.

Technical specifications

6 specifications

Dimensions and installation
Weight listed	140 g
Package dimensions	17.5 x 13.1 x 8.5 cm; 140 g
Specific uses	Indoor

Product details
Model number	A348
Quantity	1
Batteries required	No

What to know before buying

Listing details to confirm

The up-to-six-month duration is a listing claim, and the directions also say to replace media regularly. Actual replacement timing is not specified. Confirm this U2 pack suits your particular Fluval U filter before ordering, as the listing describes compatibility with the U Series rather than detailing individual models.

Who is it for?

A good fit for

Owners of Fluval U Series internal aquarium filters seeking a multi-media replacement pack.
Aquarium keepers who want biological, coarse mechanical and fine-particle/carbon media in one kit.

Less suited to

Owners of other filter brands or filter types unless compatibility is separately confirmed.
Buyers who need stated quantities for each media component, which are not provided here.

Customer reviews on Amazon

4.7 / 5 · 241 ratings

5 stars85%85%
4 stars10%10%
3 stars2%2%
2 stars0%0%
1 star3%3%

Customer feedback describes the pack as good quality and value for money, with positive comments about how it functions and an example of it helping keep an aquarium clean. That feedback may matter to U2 owners replacing several media types together, but it does not establish a particular service life or filtration outcome. The aggregate ratings are mostly five-star, with a smaller one-star share, so experiences are not uniformly positive.

Positive themes

Customers report good quality and value for money.
Some feedback describes the media pack as functioning well.

Frequently asked questions

Which filters is this media pack intended for?

The listing describes it as genuine replacement media designed for Fluval U Series internal aquarium filters. Check that your specific filter is covered before buying.

What media types are included?

The description names BioMax, Bio-Foam and a dual-action Poly-Carb cartridge with polyester and activated carbon layers. It does not give component quantities.

How long does one pack last?

The listing claims media for up to six months, while also advising regular replacement. It does not specify a fixed replacement schedule.