Mechanical-filtration
From Koipedia
The main reason for Mechanical-filtration is to remove suspended organic particles from the water before they begin to decompose and produce harmful chemicals to the fish. The biggest problem with removing these solids is clogging of the filtration media, and requires a number of different methods and stages to be succesful.
Types of Mechanical-filtration:
Vortex / Settling Chamber
Micro-screen
Sieve / screen
Foam / Brushes / Matala / Sponge
Static media / Kaldnes
Bead filters
