Please find att. some pictures of my filter and description of all main components.
The first pic shows it with lid closed and all connections from tank to filter, vice versa and connection to freshwater and drain.
In picture 2, besides explanations i tried to mark in blue where the beads are when the filter is in stable condition. As you can see, they block the 1.000µ sieve to prevent it from clogging. on the left hand side is the inlet from tank, opposite site the location for the beads pump.
Next picture shows more detailed the 1.000µ Sieve and ritght hand side the 8.000µ sieve wich saves the beads from being washed out when phase 1 of waterchanging process is performed. Parts smaller than 8.000µ (8mm) will pass and go to the drain.
Picutere 4 shows the 'gate to hell' without sieve ...
Last Picture is to show you the double bottom that is connectet to clearwater chamber at the back of the filter. The Clearwater chamber holds the Swimmervalve for Refilling. At the bottom of the rear is a Pipe to mount the mainpump or heating system first and mainpump after heating unit (you can see the hole if you look closely).
I hope the pictures show how the water flows and the system is working. Otherwise feel free to ask ...
The number of cartridges used for biological filtration depends on total volume and can be calculated with an Excel sheet. It's based on a simple but very effective System that was invented in the City of Hamburg (Germany) and is called
Hamburger Matten Filter (HMF)
It is basically a sheetfilter that comes with a formula to calculate the surface (size) that is necessary to filter a tank biologically.
I don't know if you are familiar with this concept and would like to know if you are interessted to learn more if not?
Regards, Rudolf