The filter technics are in a special room.
It is controlled by the switch cabinet in the living-room.
The filter system consist of a basin ( 500 liters ), a trickle filter ( 60 liters )
filled with organic balls, a pre-filter ( 10 liters ) , 2 skimmer and a lime-reactor.
The filter system has been activated 1 year befor the basin.
It works in a closed circuit. In this year the system stabilised it self.
In this time the Caulerpa-algae are accrete in the filter-basin.
There are some rebuildings at time to update the system
