The biotec flow through filters from oase offer the followingr r high capacity mechanical biological flow through and multi chamber filters for clear pondsr special filter materials are used in all biotec filters for effective biological cleaningr all biotec filters have a cleaning mechanism for cleaning the filter foamsr it is a simple matter to connect an oase bitron uvc clarifierr biotec filters can be recessed in the ground upto 23 of their heightr r specificationsr r dimensions 1200x80