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The lowest price for Fluval BioMax U2 / U3 / U4 right now is $11.42 at realaquatics.co.uk, compared across 30 retailers.
The all-time low was $11.42 on 31 Oct 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 31 Oct 2026.
Fluval BioMax U2 / U3 / U4
Last updated at 31/10/2026 21:00:06
Fluval U Underwater Filter BioMax, Replacement Filter Media, Fish Aquarium, A495
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Fluval U2 U3 U4 Filter BioMax 170g
Fluval BIOMAX 170g - Biological Filtration Media for U2/U3/U4 Filters - Ideal for Beneficial Bacteria Growth & Ammonia Control
Delivery $7.95
Fluval U Biomax 110gm
30-day returns
Fluval U2 U3 U4 Biomax 110G
Free delivery between Tue – Wed
Fluval U2 U3 U4 Biomax 110G
Free delivery between 3–10 Nov
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Fluval U Biomax 110gm
Delivery between 4–11 Nov $12.50
Fluval U Underwater Filter BioMax, 110 gm, Biological Filter Media for Freshwater, Marine or Reptile Environments
Free delivery between 10–13 Nov
U Underwater Filter BioMax, 110 gm, Biological Filter Media for Freshwater, Marine or Reptile Environments
Free delivery between 10–13 Nov
"Fluval U2/U3/U4 Filter Media BioMax 110g"
Delivery $9.90
| Product Type | Aquarium Filter Media |
| Compatible With | U Series internal filters |
| Efficiency | Reduces and controls ammonia and nitrate |
| Media Type | Biomax |
| Filtration Method | Biological |
Fluval U Underwater Filter BioMax, Replacement Filter Media, Fish Aquarium, A495
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Fluval U2 U3 U4 Filter BioMax 170g
Fluval BIOMAX 170g - Biological Filtration Media for U2/U3/U4 Filters - Ideal for Beneficial Bacteria Growth & Ammonia Control
Delivery $7.95
Fluval U Biomax 110gm
30-day returns
Fluval U2 U3 U4 Biomax 110G
Free delivery between Tue – Wed
| Product Type | Aquarium Filter Media |
| Compatible With | U Series internal filters |
| Efficiency | Reduces and controls ammonia and nitrate |
| Media Type | Biomax |
| Filtration Method | Biological |
