This Bio sponge poly filter is great for mechanical and biological filtration for your tank and fish ponds. It is suitable for use in fresh & saltwater aquariums. You can cut to fit and use in any pad filters as you like. It catches small particles and waste in you tank.
Provides both mechanical and biochemical filtration
Cuts to fit your filters
Can be used again after cleaning up to 16 times
Sponge size: 25" x 4 3/4"x 3/4"