Fluval BioMax Media Inserts have a complex pore system creating an optimal environment where beneficial bacteria can thrive. The BioMax Media Inserts have more capacity than most biological filter media and allow ideal water movement throughout the media, to ensure optimal contact time for efficient biological filtration. With more capacity than most biological filter media, Fluval BioMax Media Inserts help reduce ammonia and nitrite.
25 US Gallons
45 US Gallons
70 US Gallons
Provides superior bilogical filtration
Replenish only half at one time to allow proper seeding