# Fluval Underwater Filter

## Fluval Underwater Filter

  
Offering outstanding 3-stage filtration, increased water movement and vital aeration, Fluval U-Series internal filters are the perfect solution where external filtration is not possible. New Sleek Design New Easy Grip Water Control Paddle New Redesigned Media Cartridge – Traps more debris Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature Position vertically against aquarium wall to create currents or customized flow patterns Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement BioMax biological media included Made in Italy Ideal for freshwater, saltwater and reptile environments

## Details

- **Price:** 20.0 GBP - 73.49 GBP
- **Vendor:** Fluval
- **Type:** Fish : Filters : Internal
- **Tags:** Core, Equestrian, Fish Pumps & Filtration, Fluval, Internal

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Mini (200LPH) | 20.00 GBP | In stock |
| U1 (250LPH) | 29.99 GBP | In stock |
| U2 (400LPH) | 45.99 GBP | In stock |
| U4 (1000LPH) | 73.49 GBP | In stock |
| U3 (600LPH) | 60.49 GBP | In stock |

## Images

- Five Fluval Underwater Filter boxes are displayed against a white background.
- Fluval Underwater Filter with blue, white & black cartridges and white filter media.

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> Source: [Pet n Pony](https://petnpony.co.uk/products/fluval-underwater-filter)
> Updated: 2026-05-19