TetraTec Filter Foam IN300 Plus (BF300+)

Use of Tetra BF 300 replacement Foam in Tetra Internal Filters IN 300 ensures that the aquarium water is filtered effectively. Biologically active bacterial cultures that transform harmful nitrite into the plant fertiliser nitrate settle in the filter foam. The foam structure also carries out physical filtration, removing visible particles from the aquarium filter. Also suitable for use in marine water aquariums.