Filtration

Filtering consists of a mechanical pre-filter and biological filtration. Mechanical filtration function is to remove maximize the amount of solids in the water column and thus to avoid unnecessary clogging biological filtration. Biological filtration used to purify water from the biological stress and thereby prevents the dangerous increase of NO2 and NO3, which may be even with small amounts toxic to fish. The basic values of water quality is PH (around 7), GH (6-16 ° DGH), kH (8 ° dKH) and NO2 and NO3 values that should be the 0th