Product Overview
The Fluval U2/U3/U4 Stage 3 BIOMAX provides high-performance biological filtration for Fluval U Series internal filters.
Its complex porous structure provides a large surface area for beneficial bacteria to colonise, helping maintain a healthy biological balance by reducing ammonia and nitrite.
Compatible Filters
- Fluval U2 Internal Filter
- Fluval U3 Internal Filter
- Fluval U4 Internal Filter
Key Features
- Genuine Fluval BIOMAX biological filter media
- Stage 3 biological filtration
- High surface area porous media for beneficial bacteria
- Helps reduce ammonia and nitrite
- Suitable for freshwater, marine and reptile environments
- 110g pack
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For Standard Delivery, please allow 5 working days. If you have not received your order in this time, please contact us so we can investigate. Livestock Delivery: All livestock is sent using 24 Tracked delivery. You will be contacted after purchase to arrange a suitable delivery day. |
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30 Day Returns, simply contact us on help@cdlaquatics.co.uk with details of your reason for return and send your item to our returns centre in it's original condition. This excludes all livestock. Please see our Returns Policy for further details |
Product Overview
The Fluval U2/U3/U4 Stage 3 BIOMAX provides high-performance biological filtration for Fluval U Series internal filters.
Its complex porous structure provides a large surface area for beneficial bacteria to colonise, helping maintain a healthy biological balance by reducing ammonia and nitrite.
Compatible Filters
- Fluval U2 Internal Filter
- Fluval U3 Internal Filter
- Fluval U4 Internal Filter
Key Features
- Genuine Fluval BIOMAX biological filter media
- Stage 3 biological filtration
- High surface area porous media for beneficial bacteria
- Helps reduce ammonia and nitrite
- Suitable for freshwater, marine and reptile environments
- 110g pack
![]() |
For Standard Delivery, please allow 5 working days. If you have not received your order in this time, please contact us so we can investigate. Livestock Delivery: All livestock is sent using 24 Tracked delivery. You will be contacted after purchase to arrange a suitable delivery day. |
|
![]() |
30 Day Returns, simply contact us on help@cdlaquatics.co.uk with details of your reason for return and send your item to our returns centre in it's original condition. This excludes all livestock. Please see our Returns Policy for further details |




