Before you can go to biological and chemical filtration
, you need to ensure that all the large unwanted particles are removed from the water in the mechanical filtration stage. Thus, mechanical filtration is a very important first step in a multiple-stage filtration process. Large particles that escape filtration at this stage may not be broken down by biological or chemical filtration if they are simply particulates, and thus non-reactive to bacteria or chemicals.
Of course, your mechanical filtration system is only as good as the filter used. You have to get a filter media that can trap in the smallest particles, even microns in size. If you want most of the unwanted particles to be trapped right away, use a good filter such as the Eheim EHFIFIX Coarse Filter Floss from Pet Store
. This filter works just like sieves do by trapping big particles of waste as they pass through it.
The Eheim EHFIFIX Coarse Filter Floss is effective in trapping a lot of debris as water flows through it. It acts as a divider between the water and the next layers of filtration, which can either be biological or chemical - or both. It ensures that the water that goes through the next steps of filtration is already physically clean.
Mechanical Filter Media works much like a sieve trapping particulate waste as it passes through the material.
EHFIFIX 5L: A medium mechanical filter material which is to be placed between EHFIMECH on the bottom and the subsequent biological or chemical filter layers. It traps debris which has passed through the previous layer and acts as a divider.
For models 2211, 2213, 2215/2217, 2222, 2224, 2226, 2228 a special pad is recommended.