Fluval Bio-FX Biological Media 5L

Fluval Bio-FX is a premium biological media designed for use with canister filters and sumps of all sizes, in both fresh and marine aquariums.  Featuring a deep pore structure with interconnected micro-tunnels, Fluval Bio-FX offers a vast surface area where billions of beneficial nitrifying bacteria can thrive.

The three-dimensional linked cavities permit water to flow freely through the Bio-FX nodes, discouraging blockages while prolonging contact time for superior and effective biological filtration, which in turn allows for the establishment of a high concentration of nitrifying bacteria to reduce ammonia and nitrite quickly and efficiently for a healthier aquarium.

Fluval Bio-FX is a safe and inert media which will not alter the waters chemical composition.

Actual pellet size of 1.8 x 2cm each approx.

For Biological Media:

Do Not Replace Monthly: Unlike the physical filter cartridges (which trap debris and need monthly changes), ceramic biological media should not be replaced or aggressively washed out with tap water. Doing so will destroy the beneficial bacteria colony and cause your tank to cycle again. 

Rinsing: If it gets clogged with debris over a long period, gently rinse the ceramic rings in a bucket of old tank water (never chlorinated tap water) during a routine water change.