Ehfimech is used in filters to remove suspended particles its physical action creates water turbulence within the filter itself causing the particles to sink and settlecoarse dirt particles are also removed from the water flowr where do i place ehfimech in my filter it is placed as a first layer in the filterr how do i clean ehfimech ehfimech can be washed under lukewarm water and can be used several timesr re usable and cost effectiver during regular maintenance we recommend that ehfime