# Fluval Poly-Max Cartridge

## Fluval Poly-Max Cartridge

Specifically designed for the Fluval U3 filter, the U Poly-Max Cartridge helps control green water and unsightly algae growth by trapping and adsorbing phosphate, nitrite and nitrate.Features:Chemical filter mediaProduces crystal clear water, reduces odor, and creates ideal conditions for fish and plantsHelps reduce overall aquarium maintenanceSuitable for freshwater, saltwater or reptile environmentsConvenient 2-pack format

## Details

- **Price:** 5.03 GBP - 9.27 GBP
- **Vendor:** Fluval
- **Type:** Fish : Filters : Media
- **Tags:** Core, Equestrian, Fish Pumps & Filtration, Fluval, Media

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| U2 | 5.03 GBP | In stock |
| U3 | 7.03 GBP | In stock |
| U4 | 9.27 GBP | In stock |

## Images

- Fluval Poly-Max Cartridge, 2-pack filter media by Fluval, blue and white box.

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> Source: [Pet n Pony](https://petnpony.co.uk/products/fluval-poly-max-cartridge)
> Updated: 2026-05-25