u Highly porous, vast surface aria for adhesion of nitrifying bacteria.
u Strong structure, solid quality and not disintegrate.
u Absence of toxins and inert materials, harmless to aquatic species and never alter water PH and KH.
u Excellent biological filter media for any filter system.
u Suitable for both freshwater and saltwater aquarium.
u Available 12mm in diameter size
u 1 Litre packing (3 x packs inside)