Fluval U4 Media Value Pack
Specifically designed for use with the U Series internal filters, featuring all the quality, effectiveness and convenience you’ve come to expect from the leader in aquatic filtration.
These value packs deliver all the necessary media required to keep your filter operating at peak performance for up to 6 months.
BIOMAX
Complex pore system maximises water contact time and surface area to support and promote beneficial bacteria growth. Maintains nitrogen cycle to reduce and control toxic ammonia and nitrite.
BIO-FOAM
Effectively traps majority of waste and debris. Complex foam structure maintains consistent water flow and naturally promotes beneficial bacteria growth.
| Media Type | Function |
|---|---|
| BIOMAX | Supports beneficial bacteria growth; controls ammonia and nitrite |
| BIO-FOAM | Traps waste and debris; maintains water flow and promotes bacteria growth |
FAQ
How long does the media in the U4 Media Value Pack last?
The media is designed to keep the filter operating at peak performance for up to 6 months.
Is the BIOMAX media suitable for all types of aquariums?
Yes, BIOMAX is specifically designed for use with Fluval U Series filters and supports beneficial bacteria growth in most freshwater aquariums.
Can I use this media pack with other filter models?
Please contact customer service

Justin Parsons –
The U4 Media Value Pack has been a game changer for my freshwater tank. The BIOMAX and BIO-FOAM media work well together, keeping water clean and reducing ammonia levels. I’ve noticed a steady improvement in water clarity after just a few weeks.
Tracey Sanderson –
Easy to install and fits perfectly in my U4 filter. The media holds up well over time and I haven’t had to replace it early. My tank has stayed stable with minimal maintenance.
Victor Peake –
Great value for the performance. The filter runs smoothly and the media effectively traps waste. I appreciate the balance between filtration and water flow.