Sera Biopur Forte for biological filtration of all freshwater aquaria. Its extremely high porosity creates optimum living conditions for nitrifying bacteria and other micro organisms.Sera Biopur Forte can be washed out several times. It reaches its greatest biological efficiency if larger particals are prefiltered with Sera Filter Wool.
To biologically activate your filter after each change or cleaning use Sera Nitrivec and or Sera Ammovec
This product must be washed before its first use.
