Filter sponge
1.A filter medium consisting of porous interstice suitable for freshwater and saltwater aquariums.
2.Double features filter medium, can be used as a mechanical prefilter medium for coarse particles or as a biological filter medium. As prefilter medium, protects the biological filter material from rapid silting.
3.The polyporous structure creates an ideal environment for the growth of beneficial bacterium while supplying good water flow rate.
